Q: Is 400,550 a Prime Number?
A: No, 400,550 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 400550 can be evenly divided by 1 2 5 10 25 50 8,011 16,022 40,055 80,110 200,275 and 400,550, with no remainder.
Since 400,550 cannot be divided by just 1 and 400,550, it is not a prime number.