255255 has 64 divisors (see below), whose sum is σ = 580608. Its totient is φ = 92160.

The previous prime is 255253. The next prime is 255259. The reversal of 255255 is 552552.

255255 = 7² + 8² + ... + 91².

255255 is a nontrivial binomial coefficient, being equal to C(715, 2).

It is not a de Polignac number, because 255255 - 2¹ = 255253 is a prime.

255255 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255251) 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 63 ways as a sum of consecutive naturals, for example, 15007 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2²⁵⁵²⁵⁵ is an apocalyptic number.

255255 is the 714-th triangular number.

255255 is an abundant number, since it is smaller than the sum of its proper divisors (325353).

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

255255 is a wasteful number, since it uses less digits than its factorization.

255255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56.

The product of its digits is 2500, while the sum is 24.

The square root of 255255 is about 505.2276714512. The cubic root of 255255 is about 63.4343877642.

The spelling of 255255 in words is "two hundred fifty-five thousand, two hundred fifty-five".