Q: Is 511,550 a Prime Number?
A: No, 511,550 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 511550 can be evenly divided by 1 2 5 10 13 25 26 50 65 130 325 650 787 1,574 3,935 7,870 10,231 19,675 20,462 39,350 51,155 102,310 255,775 and 511,550, with no remainder.
Since 511,550 cannot be divided by just 1 and 511,550, it is not a prime number.