Q: Is 521,226 a Prime Number?
A: No, 521,226 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 521226 can be evenly divided by 1 2 3 6 9 18 23 46 69 138 207 414 1,259 2,518 3,777 7,554 11,331 22,662 28,957 57,914 86,871 173,742 260,613 and 521,226, with no remainder.
Since 521,226 cannot be divided by just 1 and 521,226, it is not a prime number.