512547812 has 12 divisors (see below), whose sum is σ = 1025095680. Its totient is φ = 219663336.

The previous prime is 512547811. The next prime is 512547823. The reversal of 512547812 is 218745215.

512547812 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (512547811) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9152612 + ... + 9152667.

It is an arithmetic number, because the mean of its divisors is an integer number (85424640).

Almost surely, 2^512547812 is an apocalyptic number.

It is an amenable number.

512547812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

512547812 is a wasteful number, since it uses less digits than its factorization.

512547812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305290 (or 18305288 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 512547812 is about 22639.5188111408. The cubic root of 512547812 is about 800.2852170520.

The spelling of 512547812 in words is "five hundred twelve million, five hundred forty-seven thousand, eight hundred twelve".