520111012 has 12 divisors (see below), whose sum is σ = 910362096. Its totient is φ = 260007560.

The previous prime is 520110973. The next prime is 520111037. The reversal of 520111012 is 210111025.

It is a junction number, because it is equal to n+sod(n) for n = 520110983 and 520111001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25323 + ... + 41005.

It is an arithmetic number, because the mean of its divisors is an integer number (75863508).

Almost surely, 2^520111012 is an apocalyptic number.

It is an amenable number.

520111012 is a deficient number, since it is larger than the sum of its proper divisors (390251084).

520111012 is a wasteful number, since it uses less digits than its factorization.

520111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23978 (or 23976 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 520111012 is about 22805.9424712069. The cubic root of 520111012 is about 804.2023718523.

Adding to 520111012 its sum of digits (13), we get a palindrome (520111025).

Adding to 520111012 its reverse (210111025), we get a palindrome (730222037).

The spelling of 520111012 in words is "five hundred twenty million, one hundred eleven thousand, twelve".