255897 has 6 divisors (see below), whose sum is σ = 369642. Its totient is φ = 170592.

The previous prime is 255887. The next prime is 255907. The reversal of 255897 is 798552.

It is an interprime number because it is at equal distance from previous prime (255887) and next prime (255907).

It can be written as a sum of positive squares in only one way, i.e., 207936 + 47961 = 456^2 + 219^2 .

It is not a de Polignac number, because 255897 - 2⁸ = 255641 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255897.

It is not an unprimeable number, because it can be changed into a prime (255847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14208 + ... + 14225.

It is an arithmetic number, because the mean of its divisors is an integer number (61607).

2²⁵⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

255897 is a deficient number, since it is larger than the sum of its proper divisors (113745).

255897 is a wasteful number, since it uses less digits than its factorization.

255897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28439 (or 28436 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 255897 is about 505.8626295745. The cubic root of 255897 is about 63.4875251912.

The spelling of 255897 in words is "two hundred fifty-five thousand, eight hundred ninety-seven".