520520530 has 16 divisors (see below), whose sum is σ = 937424664. Its totient is φ = 208099840.

The previous prime is 520520513. The next prime is 520520531. The reversal of 520520530 is 35025025.

It can be written as a sum of positive squares in 4 ways, for example, as 504496521 + 16024009 = 22461^2 + 4003^2 .

It is not an unprimeable number, because it can be changed into a prime (520520531) by changing a digit.

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, 8304 + ... + 33316.

Almost surely, 2^520520530 is an apocalyptic number.

520520530 is a deficient number, since it is larger than the sum of its proper divisors (416904134).

520520530 is a wasteful number, since it uses less digits than its factorization.

520520530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27101.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 520520530 is about 22814.9190224292. The cubic root of 520520530 is about 804.4133838229.

Adding to 520520530 its reverse (35025025), we get a palindrome (555545555).

The spelling of 520520530 in words is "five hundred twenty million, five hundred twenty thousand, five hundred thirty".