Q: Is 5,561,478 a Prime Number?
A: No, 5,561,478 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 5561478 can be evenly divided by 1 2 3 6 9 13 18 26 39 78 117 234 23,767 47,534 71,301 142,602 213,903 308,971 427,806 617,942 926,913 1,853,826 2,780,739 and 5,561,478, with no remainder.
Since 5,561,478 cannot be divided by just 1 and 5,561,478, it is not a prime number.