520005012 has 12 divisors (see below), whose sum is σ = 1213345056. Its totient is φ = 173335000.

The previous prime is 520005011. The next prime is 520005019. The reversal of 520005012 is 210500025.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 520004982 and 520005000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520005011) 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, 21666864 + ... + 21666887.

It is an arithmetic number, because the mean of its divisors is an integer number (101112088).

Almost surely, 2^520005012 is an apocalyptic number.

It is an amenable number.

520005012 is an abundant number, since it is smaller than the sum of its proper divisors (693340044).

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

520005012 is a wasteful number, since it uses less digits than its factorization.

520005012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43333758 (or 43333756 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 520005012 is about 22803.6183970878. The cubic root of 520005012 is about 804.1477352835.

Adding to 520005012 its reverse (210500025), we get a palindrome (730505037).

The spelling of 520005012 in words is "five hundred twenty million, five thousand, twelve".