520542180 has 96 divisors (see below), whose sum is σ = 1642394880. Its totient is φ = 136846080.

The previous prime is 520542179. The next prime is 520542241. The reversal of 520542180 is 81245025.

It is a happy number.

It is a super-2 number, since 2×520542180² = 541928322318304800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31552 + ... + 45128.

It is an arithmetic number, because the mean of its divisors is an integer number (17108280).

Almost surely, 2^520542180 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 520542180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821197440).

520542180 is an abundant number, since it is smaller than the sum of its proper divisors (1121852700).

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

520542180 is a wasteful number, since it uses less digits than its factorization.

520542180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13666 (or 13658 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 520542180 is about 22815.3934877310. The cubic root of 520542180 is about 804.4245363183.

The spelling of 520542180 in words is "five hundred twenty million, five hundred forty-two thousand, one hundred eighty".