255983 has 16 divisors (see below), whose sum is σ = 329280. Its totient is φ = 193536.

The previous prime is 255977. The next prime is 255989. The reversal of 255983 is 389552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255977) and next prime (255989).

It is not a de Polignac number, because 255983 - 2⁶ = 255919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2591 + ... + 2687.

It is an arithmetic number, because the mean of its divisors is an integer number (20580).

2²⁵⁵⁹⁸³ is an apocalyptic number.

255983 is a deficient number, since it is larger than the sum of its proper divisors (73297).

255983 is a wasteful number, since it uses less digits than its factorization.

255983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

The product of its digits is 10800, while the sum is 32.

The square root of 255983 is about 505.9476257480. The cubic root of 255983 is about 63.4946365363.

The spelling of 255983 in words is "two hundred fifty-five thousand, nine hundred eighty-three".