512868961 has 4 divisors (see below), whose sum is σ = 559493424. Its totient is φ = 466244500.

The previous prime is 512868949. The next prime is 512869001. The reversal of 512868961 is 169868215.

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 512868961 - 2⁷ = 512868833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512868901) 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 3 ways as a sum of consecutive naturals, for example, 23312215 + ... + 23312236.

It is an arithmetic number, because the mean of its divisors is an integer number (139873356).

Almost surely, 2^512868961 is an apocalyptic number.

It is an amenable number.

512868961 is a deficient number, since it is larger than the sum of its proper divisors (46624463).

512868961 is a wasteful number, since it uses less digits than its factorization.

512868961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46624462.

The product of its digits is 207360, while the sum is 46.

The square root of 512868961 is about 22646.6103644674. The cubic root of 512868961 is about 800.4523280551.

The spelling of 512868961 in words is "five hundred twelve million, eight hundred sixty-eight thousand, nine hundred sixty-one".