512688881 has 4 divisors (see below), whose sum is σ = 529227264. Its totient is φ = 496150500.

The previous prime is 512688877. The next prime is 512688889. The reversal of 512688881 is 188886215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512688881 - 2² = 512688877 is a prime.

It is a super-2 number, since 2×512688881² = 525699777402064322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512688889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8269145 + ... + 8269206.

It is an arithmetic number, because the mean of its divisors is an integer number (132306816).

Almost surely, 2^512688881 is an apocalyptic number.

It is an amenable number.

512688881 is a deficient number, since it is larger than the sum of its proper divisors (16538383).

512688881 is a wasteful number, since it uses less digits than its factorization.

512688881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16538382.

The product of its digits is 245760, while the sum is 47.

The square root of 512688881 is about 22642.6341444630. The cubic root of 512688881 is about 800.3586313929.

The spelling of 512688881 in words is "five hundred twelve million, six hundred eighty-eight thousand, eight hundred eighty-one".