Q: Is 505,422 a Prime Number?
A: No, 505,422 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 505422 can be evenly divided by 1 2 3 6 9 18 43 86 129 258 387 653 774 1,306 1,959 3,918 5,877 11,754 28,079 56,158 84,237 168,474 252,711 and 505,422, with no remainder.
Since 505,422 cannot be divided by just 1 and 505,422, it is not a prime number.