255949 has 6 divisors (see below), whose sum is σ = 270510. Its totient is φ = 242136.

The previous prime is 255947. The next prime is 255961. The reversal of 255949 is 949552.

It can be written as a sum of positive squares in only one way, i.e., 174724 + 81225 = 418^2 + 285^2 .

It is not a de Polignac number, because 255949 - 2¹ = 255947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7 + ... + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (45085).

2²⁵⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

255949 is a deficient number, since it is larger than the sum of its proper divisors (14561).

255949 is an equidigital number, since it uses as much as digits as its factorization.

255949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 728 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 255949 is about 505.9140243164. The cubic root of 255949 is about 63.4918252646.

The spelling of 255949 in words is "two hundred fifty-five thousand, nine hundred forty-nine".