520531012 has 6 divisors (see below), whose sum is σ = 910929278. Its totient is φ = 260265504.

The previous prime is 520531001. The next prime is 520531019. The reversal of 520531012 is 210135025.

It can be written as a sum of positive squares in only one way, i.e., 288456256 + 232074756 = 16984^2 + 15234^2 .

It is not an unprimeable number, because it can be changed into a prime (520531019) 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 as a sum of consecutive naturals, namely, 65066373 + ... + 65066380.

Almost surely, 2^520531012 is an apocalyptic number.

It is an amenable number.

520531012 is a deficient number, since it is larger than the sum of its proper divisors (390398266).

520531012 is a wasteful number, since it uses less digits than its factorization.

520531012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130132757 (or 130132755 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 520531012 is about 22815.1487393793. The cubic root of 520531012 is about 804.4187834207.

Adding to 520531012 its reverse (210135025), we get a palindrome (730666037).

The spelling of 520531012 in words is "five hundred twenty million, five hundred thirty-one thousand, twelve".