520700560 has 20 divisors (see below), whose sum is σ = 1210628988. Its totient is φ = 208280192.

The previous prime is 520700549. The next prime is 520700561. The reversal of 520700560 is 65007025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 410953984 + 109746576 = 20272^2 + 10476^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×520700560² = 542258146368627200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520700561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3254299 + ... + 3254458.

Almost surely, 2^520700560 is an apocalyptic number.

It is an amenable number.

520700560 is an abundant number, since it is smaller than the sum of its proper divisors (689928428).

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

520700560 is a wasteful number, since it uses less digits than its factorization.

520700560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508770 (or 6508764 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 520700560 is about 22818.8641259814. The cubic root of 520700560 is about 804.5061126975.

Adding to 520700560 its reverse (65007025), we get a palindrome (585707585).

The spelling of 520700560 in words is "five hundred twenty million, seven hundred thousand, five hundred sixty".