520531572 has 48 divisors (see below), whose sum is σ = 1357320384. Its totient is φ = 153888000.

The previous prime is 520531559. The next prime is 520531591. The reversal of 520531572 is 275135025.

It is a congruent number.

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, 42679 + ... + 53502.

It is an arithmetic number, because the mean of its divisors is an integer number (28277508).

Almost surely, 2^520531572 is an apocalyptic number.

It is an amenable number.

520531572 is an abundant number, since it is smaller than the sum of its proper divisors (836788812).

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

520531572 is a wasteful number, since it uses less digits than its factorization.

520531572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96240 (or 96238 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 520531572 is about 22815.1610119236. The cubic root of 520531572 is about 804.4190718918.

Adding to 520531572 its reverse (275135025), we get a palindrome (795666597).

The spelling of 520531572 in words is "five hundred twenty million, five hundred thirty-one thousand, five hundred seventy-two".