Q: Is 505,580 a Prime Number?
A: No, 505,580 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 505580 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 1,487 2,974 5,948 7,435 14,870 25,279 29,740 50,558 101,116 126,395 252,790 and 505,580, with no remainder.
Since 505,580 cannot be divided by just 1 and 505,580, it is not a prime number.