Q: Is 5,431,875 a Prime Number?
A: No, 5,431,875 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 5431875 can be evenly divided by 1 3 5 15 25 75 125 375 625 1,875 2,897 8,691 14,485 43,455 72,425 217,275 362,125 1,086,375 1,810,625 and 5,431,875, with no remainder.
Since 5,431,875 cannot be divided by just 1 and 5,431,875, it is not a prime number.