Q: Is 545,920 a Prime Number?
A: No, 545,920 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 545920 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 853 1,706 3,412 4,265 6,824 8,530 13,648 17,060 27,296 34,120 54,592 68,240 109,184 136,480 272,960 and 545,920, with no remainder.
Since 545,920 cannot be divided by just 1 and 545,920, it is not a prime number.