255724 has 12 divisors (see below), whose sum is σ = 511504. Its totient is φ = 109584.

The previous prime is 255713. The next prime is 255733. The reversal of 255724 is 427552.

255724 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4539 + ... + 4594.

2²⁵⁵⁷²⁴ is an apocalyptic number.

It is an amenable number.

255724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255724 is a wasteful number, since it uses less digits than its factorization.

255724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144 (or 9142 counting only the distinct ones).

The product of its digits is 2800, while the sum is 25.

The square root of 255724 is about 505.6916056254. The cubic root of 255724 is about 63.4732149832.

It can be divided in two parts, 255 and 724, that added together give a palindrome (979).

The spelling of 255724 in words is "two hundred fifty-five thousand, seven hundred twenty-four".