255404 has 12 divisors (see below), whose sum is σ = 454104. Its totient is φ = 125664.

The previous prime is 255383. The next prime is 255413. The reversal of 255404 is 404552.

It is a happy number.

255404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

255404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 209 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (37842).

2²⁵⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

255404 is a deficient number, since it is larger than the sum of its proper divisors (198700).

255404 is a wasteful number, since it uses less digits than its factorization.

255404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 255404 is about 505.3751082117. The cubic root of 255404 is about 63.4467282150.

Adding to 255404 its reverse (404552), we get a palindrome (659956).

The spelling of 255404 in words is "two hundred fifty-five thousand, four hundred four".