509045812 has 12 divisors (see below), whose sum is σ = 971814816. Its totient is φ = 231384440.

The previous prime is 509045711. The next prime is 509045819. The reversal of 509045812 is 218540905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509045819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5784568 + ... + 5784655.

It is an arithmetic number, because the mean of its divisors is an integer number (80984568).

Almost surely, 2^509045812 is an apocalyptic number.

It is an amenable number.

509045812 is a deficient number, since it is larger than the sum of its proper divisors (462769004).

509045812 is a wasteful number, since it uses less digits than its factorization.

509045812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11569238 (or 11569236 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 509045812 is about 22562.0436131127. The cubic root of 509045812 is about 798.4583916294.

The spelling of 509045812 in words is "five hundred nine million, forty-five thousand, eight hundred twelve".