520604947 has 4 divisors (see below), whose sum is σ = 531681696. Its totient is φ = 509528200.

The previous prime is 520604939. The next prime is 520604963. The reversal of 520604947 is 749406025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520604947 - 2³ = 520604939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520602947) 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, 5538304 + ... + 5538397.

It is an arithmetic number, because the mean of its divisors is an integer number (132920424).

Almost surely, 2^520604947 is an apocalyptic number.

520604947 is a deficient number, since it is larger than the sum of its proper divisors (11076749).

520604947 is a wasteful number, since it uses less digits than its factorization.

520604947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076748.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 520604947 is about 22816.7689868658. The cubic root of 520604947 is about 804.4568675347.

The spelling of 520604947 in words is "five hundred twenty million, six hundred four thousand, nine hundred forty-seven".