Strong Number Check

1# Helper function for factorial
2def factorial(n):
3    if n == 0 or n == 1:
4        return 1
5    return n * factorial(n - 1)
6
7# Take number
8num = int(input("Enter a number: "))
9
10# Calculate sum of factorial of digits
11temp = abs(num)
12strong_sum = 0
13while temp > 0:
14    digit = temp % 10
15    strong_sum += factorial(digit)
16    temp //= 10
17
18# Check
19if abs(num) == strong_sum:
20    print("Strong number")
21else:
22    print("Not a strong number")