255992 has 16 divisors (see below), whose sum is σ = 523800. Its totient is φ = 116320.

The previous prime is 255989. The next prime is 256019. The reversal of 255992 is 299552.

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 255992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367 + ... + 1542.

2²⁵⁵⁹⁹² is an apocalyptic number.

255992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255992 is an abundant number, since it is smaller than the sum of its proper divisors (267808).

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

255992 is a wasteful number, since it uses less digits than its factorization.

255992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926 (or 2922 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 255992 is about 505.9565198710. The cubic root of 255992 is about 63.4953806547.

The spelling of 255992 in words is "two hundred fifty-five thousand, nine hundred ninety-two".