512548816 has 20 divisors (see below), whose sum is σ = 1069453252. Its totient is φ = 236560896.

The previous prime is 512548811. The next prime is 512548819. The reversal of 512548816 is 618845215.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 226803600 + 285745216 = 15060^2 + 16904^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512548811) 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, 1231881 + ... + 1232296.

Almost surely, 2^512548816 is an apocalyptic number.

It is an amenable number.

512548816 is an abundant number, since it is smaller than the sum of its proper divisors (556904436).

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

512548816 is a wasteful number, since it uses less digits than its factorization.

512548816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464198 (or 2464192 counting only the distinct ones).

The product of its digits is 76800, while the sum is 40.

The square root of 512548816 is about 22639.5409847461. The cubic root of 512548816 is about 800.2857395956.

The spelling of 512548816 in words is "five hundred twelve million, five hundred forty-eight thousand, eight hundred sixteen".