520538560 has 56 divisors (see below), whose sum is σ = 1242431856. Its totient is φ = 207728640.

The previous prime is 520538549. The next prime is 520538581. The reversal of 520538560 is 65835025.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 155464 + ... + 158776.

Almost surely, 2^520538560 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 520538560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621215928).

520538560 is an abundant number, since it is smaller than the sum of its proper divisors (721893296).

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

520538560 is a wasteful number, since it uses less digits than its factorization.

520538560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821 (or 3811 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 520538560 is about 22815.3141551897. The cubic root of 520538560 is about 804.4226715808.

The spelling of 520538560 in words is "five hundred twenty million, five hundred thirty-eight thousand, five hundred sixty".