Q: Is 7,221,501 a Prime Number?
A: No, 7,221,501 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 7221501 can be evenly divided by 1 3 7 9 19 21 27 57 63 133 171 189 399 513 1,197 2,011 3,591 6,033 14,077 18,099 38,209 42,231 54,297 114,627 126,693 267,463 343,881 380,079 802,389 1,031,643 2,407,167 and 7,221,501, with no remainder.
Since 7,221,501 cannot be divided by just 1 and 7,221,501, it is not a prime number.