504539 has 4 divisors (see below), whose sum is σ = 576624. Its totient is φ = 432456.

The previous prime is 504527. The next prime is 504547. The reversal of 504539 is 935405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935405 = 5 ⋅187081.

It is a cyclic number.

It is not a de Polignac number, because 504539 - 2⁴ = 504523 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 36032 + ... + 36045.

It is an arithmetic number, because the mean of its divisors is an integer number (144156).

2⁵⁰⁴⁵³⁹ is an apocalyptic number.

504539 is a deficient number, since it is larger than the sum of its proper divisors (72085).

504539 is an equidigital number, since it uses as much as digits as its factorization.

504539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72084.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 504539 is about 710.3090876513. The cubic root of 504539 is about 79.6095032550.

The spelling of 504539 in words is "five hundred four thousand, five hundred thirty-nine".