505811112 has 16 divisors (see below), whose sum is σ = 1264527840. Its totient is φ = 168603696.

The previous prime is 505811083. The next prime is 505811123. The reversal of 505811112 is 211118505.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 21075463 = 505811112 / (5 + 0 + 5 + 8 + 1 + 1 + 1 + 1 + 2).

It is an unprimeable 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, 10537708 + ... + 10537755.

It is an arithmetic number, because the mean of its divisors is an integer number (79032990).

Almost surely, 2^505811112 is an apocalyptic number.

It is an amenable number.

505811112 is an abundant number, since it is smaller than the sum of its proper divisors (758716728).

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

505811112 is a wasteful number, since it uses less digits than its factorization.

505811112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21075472 (or 21075468 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 24.

The square root of 505811112 is about 22490.2448185875. The cubic root of 505811112 is about 796.7635451903.

Adding to 505811112 its reverse (211118505), we get a palindrome (716929617).

The spelling of 505811112 in words is "five hundred five million, eight hundred eleven thousand, one hundred twelve".