520117164 has 108 divisors (see below), whose sum is σ = 1565187624. Its totient is φ = 145127808.

The previous prime is 520117151. The next prime is 520117183. The reversal of 520117164 is 461711025.

It is a happy number.

520117164 is a `hidden beast` number, since 520 + 11 + 71 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72424 + ... + 79280.

It is an arithmetic number, because the mean of its divisors is an integer number (14492478).

Almost surely, 2^520117164 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 520117164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782593812).

520117164 is an abundant number, since it is smaller than the sum of its proper divisors (1045070460).

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

520117164 is a wasteful number, since it uses less digits than its factorization.

520117164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6924 (or 6912 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 520117164 is about 22806.0773479351. The cubic root of 520117164 is about 804.2055426071.

Adding to 520117164 its reverse (461711025), we get a palindrome (981828189).

The spelling of 520117164 in words is "five hundred twenty million, one hundred seventeen thousand, one hundred sixty-four".