255500 has 48 divisors (see below), whose sum is σ = 646464. Its totient is φ = 86400.

The previous prime is 255499. The next prime is 255503. The reversal of 255500 is 5552.

It is a happy number.

255500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255500.

It is not an unprimeable number, because it can be changed into a prime (255503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3464 + ... + 3536.

It is an arithmetic number, because the mean of its divisors is an integer number (13468).

2²⁵⁵⁵⁰⁰ is an apocalyptic number.

255500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323232).

255500 is an abundant number, since it is smaller than the sum of its proper divisors (390964).

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

255500 is a wasteful number, since it uses less digits than its factorization.

255500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 17.

The square root of 255500 is about 505.4700782440. The cubic root of 255500 is about 63.4546765673.

The spelling of 255500 in words is "two hundred fifty-five thousand, five hundred".