255090 has 32 divisors (see below), whose sum is σ = 668736. Its totient is φ = 61760.

The previous prime is 255083. The next prime is 255097. The reversal of 255090 is 90552.

It is an interprime number because it is at equal distance from previous prime (255083) and next prime (255097).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255090.

It is not an unprimeable number, because it can be changed into a prime (255097) by changing a digit.

255090 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57 + ... + 716.

It is an arithmetic number, because the mean of its divisors is an integer number (20898).

2²⁵⁵⁰⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334368).

255090 is an abundant number, since it is smaller than the sum of its proper divisors (413646).

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

255090 is a wasteful number, since it uses less digits than its factorization.

255090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 255090 is about 505.0643523354. The cubic root of 255090 is about 63.4207165595.

It can be divided in two parts, 25 and 5090, that added together give a palindrome (5115).

The spelling of 255090 in words is "two hundred fifty-five thousand, ninety".