255287 has 4 divisors (see below), whose sum is σ = 264120. Its totient is φ = 246456.

The previous prime is 255259. The next prime is 255313. The reversal of 255287 is 782552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255287 - 2¹² = 251191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 8803 = 255287 / (2 + 5 + 5 + 2 + 8 + 7).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255287.

It is not an unprimeable number, because it can be changed into a prime (255217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4373 + ... + 4430.

It is an arithmetic number, because the mean of its divisors is an integer number (66030).

2²⁵⁵²⁸⁷ is an apocalyptic number.

255287 is a deficient number, since it is larger than the sum of its proper divisors (8833).

255287 is an equidigital number, since it uses as much as digits as its factorization.

255287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832.

The product of its digits is 5600, while the sum is 29.

The square root of 255287 is about 505.2593393496. The cubic root of 255287 is about 63.4370384672.

The spelling of 255287 in words is "two hundred fifty-five thousand, two hundred eighty-seven".