Armstrong number is a number that is equal to the sum of cubes of its digits. For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers.

**Program:**

n = int(input("Enter a number: "))

sum = 0

a = n

while n > 0:

digit = n % 10

sum += digit ** 3

n //= 10

if a == sum:

print("Armstrong number")

else:

print("Not Armstrong number")

**Output:**

Enter a number: 153 Armstrong number

**To Check Armstrong Number video by Rajesh Sir:**

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