255770 has 8 divisors (see below), whose sum is σ = 460404. Its totient is φ = 102304.

The previous prime is 255767. The next prime is 255803. The reversal of 255770 is 77552.

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 32041 = 473^2 + 179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255770.

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 3 ways as a sum of consecutive naturals, for example, 12779 + ... + 12798.

2²⁵⁵⁷⁷⁰ is an apocalyptic number.

255770 is a deficient number, since it is larger than the sum of its proper divisors (204634).

255770 is a wasteful number, since it uses less digits than its factorization.

255770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25584.

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 255770 is about 505.7370858460. The cubic root of 255770 is about 63.4770206393.

The spelling of 255770 in words is "two hundred fifty-five thousand, seven hundred seventy".