520531140 has 48 divisors (see below), whose sum is σ = 1462950720. Its totient is φ = 138288000.

The previous prime is 520531129. The next prime is 520531171. The reversal of 520531140 is 41135025.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15 + ... + 32265.

It is an arithmetic number, because the mean of its divisors is an integer number (30478140).

Almost surely, 2^520531140 is an apocalyptic number.

It is an amenable number.

520531140 is an abundant number, since it is smaller than the sum of its proper divisors (942419580).

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

520531140 is a wasteful number, since it uses less digits than its factorization.

520531140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32532 (or 32530 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 520531140 is about 22815.1515445329. The cubic root of 520531140 is about 804.4188493570.

Adding to 520531140 its reverse (41135025), we get a palindrome (561666165).

The spelling of 520531140 in words is "five hundred twenty million, five hundred thirty-one thousand, one hundred forty".