Q: Is 551,660 a Prime Number?
A: No, 551,660 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 551660 can be evenly divided by 1 2 4 5 10 20 27,583 55,166 110,332 137,915 275,830 and 551,660, with no remainder.
Since 551,660 cannot be divided by just 1 and 551,660, it is not a prime number.