255624 has 16 divisors (see below), whose sum is σ = 639120. Its totient is φ = 85200.

The previous prime is 255617. The next prime is 255637. The reversal of 255624 is 426552.

255624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 10651 = 255624 / (2 + 5 + 5 + 6 + 2 + 4).

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 255594 and 255603.

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, 5302 + ... + 5349.

It is an arithmetic number, because the mean of its divisors is an integer number (39945).

2²⁵⁵⁶²⁴ is an apocalyptic number.

255624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

255624 is an abundant number, since it is smaller than the sum of its proper divisors (383496).

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

255624 is a wasteful number, since it uses less digits than its factorization.

255624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660 (or 10656 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 255624 is about 505.5927214666. The cubic root of 255624 is about 63.4649402429.

The spelling of 255624 in words is "two hundred fifty-five thousand, six hundred twenty-four".