Q: Is 64,521 a Prime Number?
A: No, 64,521 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 64521 can be evenly divided by 1 3 9 67 107 201 321 603 963 7,169 21,507 and 64,521, with no remainder.
Since 64,521 cannot be divided by just 1 and 64,521, it is not a prime number.