520518516 has 96 divisors (see below), whose sum is σ = 1432569600. Its totient is φ = 143990784.

The previous prime is 520518503. The next prime is 520518521. The reversal of 520518516 is 615815025.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1159060 + ... + 1159508.

It is an arithmetic number, because the mean of its divisors is an integer number (14922600).

Almost surely, 2^520518516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520518516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716284800).

520518516 is an abundant number, since it is smaller than the sum of its proper divisors (912051084).

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

520518516 is a wasteful number, since it uses less digits than its factorization.

520518516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 520518516 is about 22814.8748846011. The cubic root of 520518516 is about 804.4123463418.

The spelling of 520518516 in words is "five hundred twenty million, five hundred eighteen thousand, five hundred sixteen".