520516971 has 12 divisors (see below), whose sum is σ = 809693248. Its totient is φ = 320318064.

The previous prime is 520516957. The next prime is 520516981. The reversal of 520516971 is 179615025.

520516971 is a `hidden beast` number, since 52 + 0 + 516 + 97 + 1 = 666.

It is not a de Polignac number, because 520516971 - 2⁶ = 520516907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520516921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2224315 + ... + 2224548.

Almost surely, 2^520516971 is an apocalyptic number.

520516971 is a deficient number, since it is larger than the sum of its proper divisors (289176277).

520516971 is a wasteful number, since it uses less digits than its factorization.

520516971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448882 (or 4448879 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 520516971 is about 22814.8410250872. The cubic root of 520516971 is about 804.4115504571.

The spelling of 520516971 in words is "five hundred twenty million, five hundred sixteen thousand, nine hundred seventy-one".