255189 has 24 divisors (see below), whose sum is σ = 404320. Its totient is φ = 142560.

The previous prime is 255181. The next prime is 255191. The reversal of 255189 is 981552.

It is not a de Polignac number, because 255189 - 2³ = 255181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255181) 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 23 ways as a sum of consecutive naturals, for example, 6879 + ... + 6915.

2²⁵⁵¹⁸⁹ is an apocalyptic number.

It is an amenable number.

255189 is a deficient number, since it is larger than the sum of its proper divisors (149131).

255189 is a wasteful number, since it uses less digits than its factorization.

255189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 70 counting only the distinct ones).

The product of its digits is 3600, while the sum is 30.

The square root of 255189 is about 505.1623501410. The cubic root of 255189 is about 63.4289199895.

It can be divided in two parts, 255 and 189, that added together give a palindrome (444).

The spelling of 255189 in words is "two hundred fifty-five thousand, one hundred eighty-nine".