255902 has 4 divisors (see below), whose sum is σ = 383856. Its totient is φ = 127950.

The previous prime is 255887. The next prime is 255907. The reversal of 255902 is 209552.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 255902.

It is not an unprimeable number, because it can be changed into a prime (255907) by changing a digit.

255902 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 63974 + ... + 63977.

It is an arithmetic number, because the mean of its divisors is an integer number (95964).

2²⁵⁵⁹⁰² is an apocalyptic number.

255902 is a deficient number, since it is larger than the sum of its proper divisors (127954).

255902 is a wasteful number, since it uses less digits than its factorization.

255902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127953.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 255902 is about 505.8675716035. The cubic root of 255902 is about 63.4879386851.

The spelling of 255902 in words is "two hundred fifty-five thousand, nine hundred two".