1005255 has 24 divisors (see below), whose sum is σ = 1769040. Its totient is φ = 528000.

The previous prime is 1005241. The next prime is 1005269. The reversal of 1005255 is 5525001.

It is an interprime number because it is at equal distance from previous prime (1005241) and next prime (1005269).

It is not a de Polignac number, because 1005255 - 2⁴ = 1005239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3880 + ... + 4130.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2^1005255 is an apocalyptic number.

1005255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1005255 is a deficient number, since it is larger than the sum of its proper divisors (763785).

1005255 is a wasteful number, since it uses less digits than its factorization.

1005255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 1005255 is about 1002.6240571620. The cubic root of 1005255 is about 100.1748607257.

The spelling of 1005255 in words is "one million, five thousand, two hundred fifty-five".