520161012 has 72 divisors (see below), whose sum is σ = 1514612736. Its totient is φ = 147438144.

The previous prime is 520161001. The next prime is 520161013. The reversal of 520161012 is 210161025.

520161012 is a `hidden beast` number, since 52 + 0 + 1 + 610 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520161013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23878 + ... + 40130.

It is an arithmetic number, because the mean of its divisors is an integer number (21036288).

Almost surely, 2^520161012 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 520161012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757306368).

520161012 is an abundant number, since it is smaller than the sum of its proper divisors (994451724).

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

520161012 is a wasteful number, since it uses less digits than its factorization.

520161012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16397 (or 16392 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 520161012 is about 22807.0386503816. The cubic root of 520161012 is about 804.2281412420.

The spelling of 520161012 in words is "five hundred twenty million, one hundred sixty-one thousand, twelve".