255568 has 10 divisors (see below), whose sum is σ = 495194. Its totient is φ = 127776.

The previous prime is 255551. The next prime is 255571. The reversal of 255568 is 865552.

255568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 238144 + 17424 = 488^2 + 132^2 .

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

255568 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7971 + ... + 8002.

2²⁵⁵⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

255568 is a deficient number, since it is larger than the sum of its proper divisors (239626).

255568 is a wasteful number, since it uses less digits than its factorization.

255568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15981 (or 15975 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 255568 is about 505.5373378891. The cubic root of 255568 is about 63.4603054457.

The spelling of 255568 in words is "two hundred fifty-five thousand, five hundred sixty-eight".