255289 has 4 divisors (see below), whose sum is σ = 270324. Its totient is φ = 240256.

The previous prime is 255259. The next prime is 255313. The reversal of 255289 is 982552.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 144400 + 110889 = 380^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 255289 - 2⁹ = 254777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255289.

It is not an unprimeable number, because it can be changed into a prime (255209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7492 + ... + 7525.

It is an arithmetic number, because the mean of its divisors is an integer number (67581).

2²⁵⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

255289 is a deficient number, since it is larger than the sum of its proper divisors (15035).

255289 is a wasteful number, since it uses less digits than its factorization.

255289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15034.

The product of its digits is 7200, while the sum is 31.

The square root of 255289 is about 505.2613185274. The cubic root of 255289 is about 63.4372041288.

The spelling of 255289 in words is "two hundred fifty-five thousand, two hundred eighty-nine".