255590 has 16 divisors (see below), whose sum is σ = 468720. Its totient is φ = 100320.

The previous prime is 255589. The next prime is 255613. The reversal of 255590 is 95552.

It is an Ulam 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, 401 + ... + 819.

It is an arithmetic number, because the mean of its divisors is an integer number (29295).

2²⁵⁵⁵⁹⁰ is an apocalyptic number.

255590 is a deficient number, since it is larger than the sum of its proper divisors (213130).

255590 is a wasteful number, since it uses less digits than its factorization.

255590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 255590 is about 505.5590964467. The cubic root of 255590 is about 63.4621263396.

The spelling of 255590 in words is "two hundred fifty-five thousand, five hundred ninety".