255807 has 12 divisors (see below), whose sum is σ = 378664. Its totient is φ = 166320.

The previous prime is 255803. The next prime is 255839. The reversal of 255807 is 708552.

It is a happy number.

It is not a de Polignac number, because 255807 - 2² = 255803 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255807.

It is not an unprimeable number, because it can be changed into a prime (255803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57 + ... + 717.

2²⁵⁵⁸⁰⁷ is an apocalyptic number.

255807 is a deficient number, since it is larger than the sum of its proper divisors (122857).

255807 is a wasteful number, since it uses less digits than its factorization.

255807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 255807 is about 505.7736647948. The cubic root of 255807 is about 63.4800813794.

It can be divided in two parts, 25 and 5807, that added together give a cube (5832 = 18³).

The spelling of 255807 in words is "two hundred fifty-five thousand, eight hundred seven".