531520364 has 12 divisors (see below), whose sum is σ = 979116600. Its totient is φ = 251772768.

The previous prime is 531520357. The next prime is 531520387. The reversal of 531520364 is 463025135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3496769 + ... + 3496920.

It is an arithmetic number, because the mean of its divisors is an integer number (81593050).

Almost surely, 2^531520364 is an apocalyptic number.

It is an amenable number.

531520364 is a deficient number, since it is larger than the sum of its proper divisors (447596236).

531520364 is a wasteful number, since it uses less digits than its factorization.

531520364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993712 (or 6993710 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 531520364 is about 23054.7254158448. The cubic root of 531520364 is about 810.0403190823.

Adding to 531520364 its reverse (463025135), we get a palindrome (994545499).

The spelling of 531520364 in words is "five hundred thirty-one million, five hundred twenty thousand, three hundred sixty-four".