Q: Is 51,021 a Prime Number?
A: No, 51,021 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 51021 can be evenly divided by 1 3 9 5,669 17,007 and 51,021, with no remainder.
Since 51,021 cannot be divided by just 1 and 51,021, it is not a prime number.