504509 has 8 divisors (see below), whose sum is σ = 544320. Its totient is φ = 465856.

The previous prime is 504479. The next prime is 504521. The reversal of 504509 is 905405.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 504509 - 2¹² = 500413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752 + ... + 1254.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2⁵⁰⁴⁵⁰⁹ is an apocalyptic number.

504509 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

504509 is a deficient number, since it is larger than the sum of its proper divisors (39811).

504509 is a wasteful number, since it uses less digits than its factorization.

504509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 504509 is about 710.2879697700. The cubic root of 504509 is about 79.6079253575.

The spelling of 504509 in words is "five hundred four thousand, five hundred nine".