Q: Is 551,500 a Prime Number?
A: No, 551,500 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 551500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 1,103 2,206 4,412 5,515 11,030 22,060 27,575 55,150 110,300 137,875 275,750 and 551,500, with no remainder.
Since 551,500 cannot be divided by just 1 and 551,500, it is not a prime number.