Q: Is 1,821,500 a Prime Number?
A: No, 1,821,500 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 1821500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 3,643 7,286 14,572 18,215 36,430 72,860 91,075 182,150 364,300 455,375 910,750 and 1,821,500, with no remainder.
Since 1,821,500 cannot be divided by just 1 and 1,821,500, it is not a prime number.