509564012 has 6 divisors (see below), whose sum is σ = 891737028. Its totient is φ = 254782004.

The previous prime is 509564009. The next prime is 509564023. The reversal of 509564012 is 210465905.

It is a happy number.

It is a super-2 number, since 2×509564012² = 519310964651072288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 509564012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63695498 + ... + 63695505.

It is an arithmetic number, because the mean of its divisors is an integer number (148622838).

Almost surely, 2^509564012 is an apocalyptic number.

It is an amenable number.

509564012 is a deficient number, since it is larger than the sum of its proper divisors (382173016).

509564012 is a wasteful number, since it uses less digits than its factorization.

509564012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127391007 (or 127391005 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 509564012 is about 22573.5245808004. The cubic root of 509564012 is about 798.7292387762.

The spelling of 509564012 in words is "five hundred nine million, five hundred sixty-four thousand, twelve".