255530 has 32 divisors (see below), whose sum is σ = 528768. Its totient is φ = 88000.

The previous prime is 255523. The next prime is 255551. The reversal of 255530 is 35552.

It is a d-powerful number, because it can be written as 2⁷ + 5 + 5³ + 5⁷ + 3¹¹ + 0 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2480 + ... + 2580.

It is an arithmetic number, because the mean of its divisors is an integer number (16524).

2²⁵⁵⁵³⁰ is an apocalyptic number.

It is a pronic number, being equal to 505×506.

255530 is an abundant number, since it is smaller than the sum of its proper divisors (273238).

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

255530 is a wasteful number, since it uses less digits than its factorization.

255530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 255530 is about 505.4997527200. The cubic root of 255530 is about 63.4571600191.

It can be divided in two parts, 25 and 5530, that added together give a palindrome (5555).

The spelling of 255530 in words is "two hundred fifty-five thousand, five hundred thirty".