Q: Is 165,375 a Prime Number?
A: No, 165,375 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 165375 can be evenly divided by 1 3 5 7 9 15 21 25 27 35 45 49 63 75 105 125 135 147 175 189 225 245 315 375 441 525 675 735 875 945 1,125 1,225 1,323 1,575 2,205 2,625 3,375 3,675 4,725 6,125 6,615 7,875 11,025 18,375 23,625 33,075 55,125 and 165,375, with no remainder.
Since 165,375 cannot be divided by just 1 and 165,375, it is not a prime number.