255281 has 8 divisors (see below), whose sum is σ = 279720. Its totient is φ = 231552.

The previous prime is 255259. The next prime is 255313. The reversal of 255281 is 182552.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 255025 = 16^2 + 505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255281 - 2⁶ = 255217 is a prime.

It is a super-2 number, since 2×255281² = 130336777922, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255281.

It is not an unprimeable number, because it can be changed into a prime (255251) 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, 815 + ... + 1083.

It is an arithmetic number, because the mean of its divisors is an integer number (34965).

2²⁵⁵²⁸¹ is an apocalyptic number.

It is an amenable number.

255281 is a deficient number, since it is larger than the sum of its proper divisors (24439).

255281 is a wasteful number, since it uses less digits than its factorization.

255281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its digits is 800, while the sum is 23.

The square root of 255281 is about 505.2534017698. The cubic root of 255281 is about 63.4365414773.

The spelling of 255281 in words is "two hundred fifty-five thousand, two hundred eighty-one".