Strong Number

 If sum of factorial of digits equals original number, it is a Strong Number.

1!+4!+5!=145

public class progprac {
    public static void main(String[] args) {
        int num = 145;
        int temp = num;
        int sum = 0;
        while (temp > 0) {
            int digit = temp % 10;
            int fact = 1;
            // factorial of digit
            for (int i = 1; i <= digit; i++) {
                fact = fact * i;
            }
            sum = sum + fact;
            temp = temp / 10;
        }
        if (sum == num) {
            System.out.println(num + " is Strong Number");
        } else {
            System.out.println(num + " is Not Strong Number");
        }
    }
}