255290 has 24 divisors (see below), whose sum is σ = 535572. Its totient is φ = 87360.

The previous prime is 255259. The next prime is 255313. The reversal of 255290 is 92552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 8281 = 497^2 + 91^2 .

It is a super-3 number, since 3×255290³ = 49914033332667000, which contains 333 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255290.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 230 + ... + 750.

2²⁵⁵²⁹⁰ is an apocalyptic number.

255290 is an abundant number, since it is smaller than the sum of its proper divisors (280282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255290 is a wasteful number, since it uses less digits than its factorization.

255290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 255290 is about 505.2623081133. The cubic root of 255290 is about 63.4372869593.

It can be divided in two parts, 255 and 290, that added together give a palindrome (545).

The spelling of 255290 in words is "two hundred fifty-five thousand, two hundred ninety".