Q: Is 1,553,804 a Prime Number?
A: No, 1,553,804 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 1553804 can be evenly divided by 1 2 4 7 14 28 211 263 422 526 844 1,052 1,477 1,841 2,954 3,682 5,908 7,364 55,493 110,986 221,972 388,451 776,902 and 1,553,804, with no remainder.
Since 1,553,804 cannot be divided by just 1 and 1,553,804, it is not a prime number.