Q: Is 528,221 a Prime Number?
A: No, 528,221 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 528221 can be evenly divided by 1 167 3,163 and 528,221, with no remainder.
Since 528,221 cannot be divided by just 1 and 528,221, it is not a prime number.