520531011 has 96 divisors (see below), whose sum is σ = 1062996480. Its totient is φ = 236390400.

The previous prime is 520531001. The next prime is 520531019. The reversal of 520531011 is 110135025.

It is not a de Polignac number, because 520531011 - 2⁵ = 520530979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520531019) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 169651 + ... + 172691.

It is an arithmetic number, because the mean of its divisors is an integer number (11072880).

Almost surely, 2^520531011 is an apocalyptic number.

520531011 is an abundant number, since it is smaller than the sum of its proper divisors (542465469).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520531011 is a wasteful number, since it uses less digits than its factorization.

520531011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 520531011 is about 22815.1487174640. The cubic root of 520531011 is about 804.4187829056.

Adding to 520531011 its reverse (110135025), we get a palindrome (630666036).

The spelling of 520531011 in words is "five hundred twenty million, five hundred thirty-one thousand, eleven".