505804 has 24 divisors (see below), whose sum is σ = 973728. Its totient is φ = 228480.

The previous prime is 505781. The next prime is 505811. The reversal of 505804 is 408505.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3624 + ... + 3760.

It is an arithmetic number, because the mean of its divisors is an integer number (40572).

2⁵⁰⁵⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

505804 is a deficient number, since it is larger than the sum of its proper divisors (467924).

505804 is a wasteful number, since it uses less digits than its factorization.

505804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 505804 is about 711.1989876258. The cubic root of 505804 is about 79.6759810852.

The spelling of 505804 in words is "five hundred five thousand, eight hundred four".