255424 has 28 divisors (see below), whose sum is σ = 547624. Its totient is φ = 117504.

The previous prime is 255419. The next prime is 255443. The reversal of 255424 is 424552.

255424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 255395 and 255404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679 + ... + 985.

It is an arithmetic number, because the mean of its divisors is an integer number (19558).

2²⁵⁵⁴²⁴ 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 255424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273812).

255424 is an abundant number, since it is smaller than the sum of its proper divisors (292200).

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

255424 is a wasteful number, since it uses less digits than its factorization.

255424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 322 counting only the distinct ones).

The product of its digits is 1600, while the sum is 22.

The square root of 255424 is about 505.3948951068. The cubic root of 255424 is about 63.4483842859.

Adding to 255424 its reverse (424552), we get a palindrome (679976).

The spelling of 255424 in words is "two hundred fifty-five thousand, four hundred twenty-four".