520012537 has 4 divisors (see below), whose sum is σ = 567286416. Its totient is φ = 472738660.

The previous prime is 520012529. The next prime is 520012547. The reversal of 520012537 is 735210025.

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 520012537 - 2³ = 520012529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520012517) 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, 23636923 + ... + 23636944.

It is an arithmetic number, because the mean of its divisors is an integer number (141821604).

Almost surely, 2^520012537 is an apocalyptic number.

It is an amenable number.

520012537 is a deficient number, since it is larger than the sum of its proper divisors (47273879).

520012537 is a wasteful number, since it uses less digits than its factorization.

520012537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47273878.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 520012537 is about 22803.7833922356. The cubic root of 520012537 is about 804.1516142093.

The spelling of 520012537 in words is "five hundred twenty million, twelve thousand, five hundred thirty-seven".