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Python 3 Program to Check Whether the Number is Armstrong Number or Not Tutorial For Beginners
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Jun 1, 2025
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0:00
uh hello guys welcome to this video so
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in this video I'll show you a Python
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program uh to check whether a number is
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a Armstrong number or not armstrong is a
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special kind of a number as you can see
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it's a number which is equal to the sum
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of its own digits each raised to the
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power of a number of digits in the
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number so what this means 153 is a
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Armstrong number as you can see 1 to
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the^ 3 + 5 ^ 3 + 3 ^ 3 so this comes out
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to be 1 and 5 to the^ 3 comes out to be
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125 and then it comes out to be
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27 so
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this sum as you can see
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126 + 7 comes out to be
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your
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153 so this
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is the actual formula here
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each digit to the raised power three the
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actual sum
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is this sum
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153 so we can do this programmatically
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to check whether a number is Armstrong
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or not so this is actually our Python
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program here we simply ask the
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user so if I run this Python script it
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will ask to enter a number so let's
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suppose I write a number 153 as soon as
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I write this number you will see it's a
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Armstrong number it calculates this
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programmatically the
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formula and uh now if I submit another
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number let's suppose 154 it will say not
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an Armstrong number so let me just show
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you the actual program guys it's uh it's
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very easy and for this I will use this
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Python tutor software where I will
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explain each
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line so this is a very special software
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where you can visualize the execution of
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the program step by step so here it will
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asking you to enter a number let's
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suppose I write a
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number 153 click on submit so as you can
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see the number is registered as a global
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variable it is stored inside this
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variable
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num now in the next step what we are
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doing we are extracting we need to
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extract each digit each digit from this
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number so we need to extract this one
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then we need to extract this five then
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we have to extract three and then we
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need to process them 1 to the^ 3
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5 but before that we need to extract
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each digit for extracting each
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digit so what we can do right here we
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can uh now to extract this
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three we can divide this number by 100
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so if I divide this by
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100 as you can
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see it comes out to be
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53 so
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the 100 divided by
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153 I think yeah so basically it
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extracts the digit of so it comes out to
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be one so we are extracting this digit
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one so that's why divide this by 100 now
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in the next step we are
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dividing the whole number by 10 and then
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extracting the remainder when we divide
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this by 10
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again so now what happens we extract
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this five from
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here and now to extract the unit digit
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we actually get the remainder when
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whenever we divide this by 10 so that's
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why we this is the remainder operator
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this is not division this is used to
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calculate the remainder this is the
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division operator so this will extract
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this three which is
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there so multiple ways by which you can
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do extract the digits this is the most
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simplest way by which you calculate this
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by using the division operator and
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remainder operator now we get all these
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three digits now we can successfully
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calculate this by this if condition a
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raised ^ 3 + b raised ^ 3 + c raised to
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^ 3 if it is comes out to be the actual
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number then it's a Armstrong
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number so it calculates so now the sum
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comes out to be Armstrong so you can see
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that it prints out this number is a
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Armstrong number so in this easy way
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this is the way by which you can check
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whether a number is Armstrong or not
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uh also check out my website guys uh
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freemediattools.com uh which contains uh
4:59
thousands of tools