255786 has 16 divisors (see below), whose sum is σ = 518400. Its totient is φ = 84128.

The previous prime is 255767. The next prime is 255803. The reversal of 255786 is 687552.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2²⁵⁵⁷⁸⁶ is an apocalyptic number.

255786 is an abundant number, since it is smaller than the sum of its proper divisors (262614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255786 is a wasteful number, since it uses less digits than its factorization.

255786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its digits is 16800, while the sum is 33.

The square root of 255786 is about 505.7529040945. The cubic root of 255786 is about 63.4783442388.

The spelling of 255786 in words is "two hundred fifty-five thousand, seven hundred eighty-six".