255915 has 36 divisors (see below), whose sum is σ = 497952. Its totient is φ = 121440.

The previous prime is 255907. The next prime is 255917. The reversal of 255915 is 519552.

It is not a de Polignac number, because 255915 - 2³ = 255907 is a prime.

It is a zygodrome in base 3.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255915.

It is not an unprimeable number, because it can be changed into a prime (255917) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 5422 + ... + 5468.

It is an arithmetic number, because the mean of its divisors is an integer number (13832).

2²⁵⁵⁹¹⁵ is an apocalyptic number.

255915 is a deficient number, since it is larger than the sum of its proper divisors (242037).

255915 is a wasteful number, since it uses less digits than its factorization.

255915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 66 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 255915 is about 505.8804206529. The cubic root of 255915 is about 63.4890137441.

The spelling of 255915 in words is "two hundred fifty-five thousand, nine hundred fifteen".