509012112 has 40 divisors (see below), whose sum is σ = 1502798656. Its totient is φ = 145431936.

The previous prime is 509012087. The next prime is 509012117. The reversal of 509012112 is 211210905.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (509012117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757123 + ... + 757794.

Almost surely, 2^509012112 is an apocalyptic number.

It is an amenable number.

509012112 is an abundant number, since it is smaller than the sum of its proper divisors (993786544).

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

509012112 is a wasteful number, since it uses less digits than its factorization.

509012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514935 (or 1514929 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 509012112 is about 22561.2967712408. The cubic root of 509012112 is about 798.4407713151.

The spelling of 509012112 in words is "five hundred nine million, twelve thousand, one hundred twelve".