255860 has 24 divisors (see below), whose sum is σ = 586656. Its totient is φ = 92960.

The previous prime is 255859. The next prime is 255869. The reversal of 255860 is 68552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362 + ... + 801.

It is an arithmetic number, because the mean of its divisors is an integer number (24444).

2²⁵⁵⁸⁶⁰ is an apocalyptic number.

255860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255860 is an abundant number, since it is smaller than the sum of its proper divisors (330796).

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

255860 is a wasteful number, since it uses less digits than its factorization.

255860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 255860 is about 505.8260570591. The cubic root of 255860 is about 63.4844651688.

It can be divided in two parts, 25 and 5860, that added together give a palindrome (5885).

The spelling of 255860 in words is "two hundred fifty-five thousand, eight hundred sixty".