520051020 has 48 divisors (see below), whose sum is σ = 1470577248. Its totient is φ = 137305600.

The previous prime is 520051019. The next prime is 520051031. The reversal of 520051020 is 20150025.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36849 + ... + 48968.

It is an arithmetic number, because the mean of its divisors is an integer number (30637026).

Almost surely, 2^520051020 is an apocalyptic number.

It is an amenable number.

520051020 is an abundant number, since it is smaller than the sum of its proper divisors (950526228).

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

520051020 is a wasteful number, since it uses less digits than its factorization.

520051020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85930 (or 85928 counting only the distinct ones).

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

The square root of 520051020 is about 22804.6271620476. The cubic root of 520051020 is about 804.1714505280.

The spelling of 520051020 in words is "five hundred twenty million, fifty-one thousand, twenty".