Q: Is 551,240 a Prime Number?
A: No, 551,240 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 551240 can be evenly divided by 1 2 4 5 8 10 20 40 13,781 27,562 55,124 68,905 110,248 137,810 275,620 and 551,240, with no remainder.
Since 551,240 cannot be divided by just 1 and 551,240, it is not a prime number.