509612 has 6 divisors (see below), whose sum is σ = 891828. Its totient is φ = 254804.

The previous prime is 509603. The next prime is 509623. The reversal of 509612 is 216905.

It is an alternating number because its digits alternate between odd and even.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 509612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63698 + ... + 63705.

It is an arithmetic number, because the mean of its divisors is an integer number (148638).

2⁵⁰⁹⁶¹² is an apocalyptic number.

It is an amenable number.

509612 is a deficient number, since it is larger than the sum of its proper divisors (382216).

509612 is a wasteful number, since it uses less digits than its factorization.

509612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127407 (or 127405 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 509612 is about 713.8711368307. The cubic root of 509612 is about 79.8754311331.

The spelling of 509612 in words is "five hundred nine thousand, six hundred twelve".