Q: Is 1,550,558 a Prime Number?
A: No, 1,550,558 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 1550558 can be evenly divided by 1 2 31 62 89 178 281 562 2,759 5,518 8,711 17,422 25,009 50,018 775,279 and 1,550,558, with no remainder.
Since 1,550,558 cannot be divided by just 1 and 1,550,558, it is not a prime number.