512912491 has 16 divisors (see below), whose sum is σ = 668412864. Its totient is φ = 381947904.

The previous prime is 512912479. The next prime is 512912497. The reversal of 512912491 is 194219215.

It is not a de Polignac number, because 512912491 - 2⁵ = 512912459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512912497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164230 + ... + 167323.

It is an arithmetic number, because the mean of its divisors is an integer number (41775804).

Almost surely, 2^512912491 is an apocalyptic number.

512912491 is a deficient number, since it is larger than the sum of its proper divisors (155500373).

512912491 is a wasteful number, since it uses less digits than its factorization.

512912491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331590.

The product of its digits is 6480, while the sum is 34.

The square root of 512912491 is about 22647.5714150546. The cubic root of 512912491 is about 800.4749736734.

It can be divided in two parts, 5129124 and 91, that added together give a palindrome (5129215).

The spelling of 512912491 in words is "five hundred twelve million, nine hundred twelve thousand, four hundred ninety-one".