Q: Is 5,216,721 a Prime Number?
A: No, 5,216,721 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 5216721 can be evenly divided by 1 3 59 177 29,473 88,419 1,738,907 and 5,216,721, with no remainder.
Since 5,216,721 cannot be divided by just 1 and 5,216,721, it is not a prime number.