255291 has 8 divisors (see below), whose sum is σ = 348480. Its totient is φ = 166152.

The previous prime is 255259. The next prime is 255313. The reversal of 255291 is 192552.

255291 = 6² + 7² + ... + 91².

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

It is not a de Polignac number, because 255291 - 2⁵ = 255259 is a prime.

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, 861 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (43560).

2²⁵⁵²⁹¹ is an apocalyptic number.

255291 is a deficient number, since it is larger than the sum of its proper divisors (93189).

255291 is a wasteful number, since it uses less digits than its factorization.

255291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025.

The product of its digits is 900, while the sum is 24.

The square root of 255291 is about 505.2632976973. The cubic root of 255291 is about 63.4373697895.

It can be divided in two parts, 2552 and 91, that multiplied together give a palindrome (232232).

The spelling of 255291 in words is "two hundred fifty-five thousand, two hundred ninety-one".