509057 has 4 divisors (see below), whose sum is σ = 519936. Its totient is φ = 498180.

The previous prime is 509053. The next prime is 509063. The reversal of 509057 is 750905.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 509057 - 2² = 509053 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 509057.

It is not an unprimeable number, because it can be changed into a prime (509053) 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, 5369 + ... + 5462.

It is an arithmetic number, because the mean of its divisors is an integer number (129984).

2⁵⁰⁹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

509057 is a deficient number, since it is larger than the sum of its proper divisors (10879).

509057 is a wasteful number, since it uses less digits than its factorization.

509057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878.

The product of its (nonzero) digits is 1575, while the sum is 26.

The square root of 509057 is about 713.4823053167. The cubic root of 509057 is about 79.8464241193.

The spelling of 509057 in words is "five hundred nine thousand, fifty-seven".