Q: Is 1,555,523 a Prime Number?
A: Yes, 1,555,523 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1555523 can be evenly divided by 1 and 1,555,523, with no remainder.
Since 1,555,523 can be divided by just 1 and 1,555,523, it is a prime number.