Strong Number in Java

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