Q: Is 550,400 a Prime Number?
A: No, 550,400 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 550400 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 43 50 64 80 86 100 128 160 172 200 215 256 320 344 400 430 512 640 688 800 860 1,075 1,280 1,376 1,600 1,720 2,150 2,560 2,752 3,200 3,440 4,300 5,504 6,400 6,880 8,600 11,008 12,800 13,760 17,200 22,016 27,520 34,400 55,040 68,800 110,080 137,600 275,200 and 550,400, with no remainder.
Since 550,400 cannot be divided by just 1 and 550,400, it is not a prime number.