520664211 has 6 divisors (see below), whose sum is σ = 752070540. Its totient is φ = 347109468.

The previous prime is 520664161. The next prime is 520664237. The reversal of 520664211 is 112466025.

520664211 is a `hidden beast` number, since 5 + 2 + 0 + 6 + 642 + 11 = 666.

It is not a de Polignac number, because 520664211 - 2⁶ = 520664147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520664411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28925781 + ... + 28925798.

It is an arithmetic number, because the mean of its divisors is an integer number (125345090).

Almost surely, 2^520664211 is an apocalyptic number.

520664211 is a deficient number, since it is larger than the sum of its proper divisors (231406329).

520664211 is a wasteful number, since it uses less digits than its factorization.

520664211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57851585 (or 57851582 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 520664211 is about 22818.0676438650. The cubic root of 520664211 is about 804.4873919743.

The spelling of 520664211 in words is "five hundred twenty million, six hundred sixty-four thousand, two hundred eleven".