520606057 has 4 divisors (see below), whose sum is σ = 538558020. Its totient is φ = 502654096.

The previous prime is 520606049. The next prime is 520606067. The reversal of 520606057 is 750606025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 345811216 + 174794841 = 18596^2 + 13221^2 .

It is a cyclic number.

It is not a de Polignac number, because 520606057 - 2³ = 520606049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520606027) 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, 8975938 + ... + 8975995.

It is an arithmetic number, because the mean of its divisors is an integer number (134639505).

Almost surely, 2^520606057 is an apocalyptic number.

It is an amenable number.

520606057 is a deficient number, since it is larger than the sum of its proper divisors (17951963).

520606057 is a wasteful number, since it uses less digits than its factorization.

520606057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17951962.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 520606057 is about 22816.7933110681. The cubic root of 520606057 is about 804.4574392711.

The spelling of 520606057 in words is "five hundred twenty million, six hundred six thousand, fifty-seven".