Q: Is 55,420 a Prime Number?
A: No, 55,420 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 55420 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 163 170 326 340 652 815 1,630 2,771 3,260 5,542 11,084 13,855 27,710 and 55,420, with no remainder.
Since 55,420 cannot be divided by just 1 and 55,420, it is not a prime number.