555404 has 12 divisors (see below), whose sum is σ = 1014384. Its totient is φ = 265584.

The previous prime is 555391. The next prime is 555419. The reversal of 555404 is 404555.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 555404.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555404.

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, 2927 + ... + 3110.

It is an arithmetic number, because the mean of its divisors is an integer number (84532).

2⁵⁵⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

555404 is a deficient number, since it is larger than the sum of its proper divisors (458980).

555404 is a wasteful number, since it uses less digits than its factorization.

555404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 555404 is about 745.2543190079. The cubic root of 555404 is about 82.1995931017.

Adding to 555404 its reverse (404555), we get a palindrome (959959).

It can be divided in two parts, 555 and 404, that added together give a palindrome (959).

The spelling of 555404 in words is "five hundred fifty-five thousand, four hundred four".