255432 has 32 divisors (see below), whose sum is σ = 662400. Its totient is φ = 81984.

The previous prime is 255419. The next prime is 255443. The reversal of 255432 is 234552.

It is a junction number, because it is equal to n+sod(n) for n = 255399 and 255408.

It is a congruent number.

It is an unprimeable number.

255432 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 7 ways as a sum of consecutive naturals, for example, 513 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (20700).

2²⁵⁵⁴³² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331200).

255432 is an abundant number, since it is smaller than the sum of its proper divisors (406968).

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

255432 is a wasteful number, since it uses less digits than its factorization.

255432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 401 counting only the distinct ones).

The product of its digits is 1200, while the sum is 21.

The square root of 255432 is about 505.4028096479. The cubic root of 255432 is about 63.4490466901.

Adding to 255432 its reverse (234552), we get a palindrome (489984).

The spelling of 255432 in words is "two hundred fifty-five thousand, four hundred thirty-two".