505812 has 24 divisors (see below), whose sum is σ = 1201312. Its totient is φ = 165600.

The previous prime is 505811. The next prime is 505819. The reversal of 505812 is 218505.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505812.

It is not an unprimeable number, because it can be changed into a prime (505811) by changing a digit.

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, 387 + ... + 1077.

2⁵⁰⁵⁸¹² is an apocalyptic number.

It is an amenable number.

505812 is an abundant number, since it is smaller than the sum of its proper divisors (695500).

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

505812 is a wasteful number, since it uses less digits than its factorization.

505812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 505812 is about 711.2046119086. The cubic root of 505812 is about 79.6764011455.

The spelling of 505812 in words is "five hundred five thousand, eight hundred twelve".