Q: Is 1,375,520 a Prime Number?
A: No, 1,375,520 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 1375520 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 8,597 17,194 34,388 42,985 68,776 85,970 137,552 171,940 275,104 343,880 687,760 and 1,375,520, with no remainder.
Since 1,375,520 cannot be divided by just 1 and 1,375,520, it is not a prime number.