Q: Is 400,575 a Prime Number?
A: No, 400,575 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 400575 can be evenly divided by 1 3 5 7 15 21 25 35 49 75 105 109 147 175 245 327 525 545 735 763 1,225 1,635 2,289 2,725 3,675 3,815 5,341 8,175 11,445 16,023 19,075 26,705 57,225 80,115 133,525 and 400,575, with no remainder.
Since 400,575 cannot be divided by just 1 and 400,575, it is not a prime number.