506539 has 4 divisors (see below), whose sum is σ = 552600. Its totient is φ = 460480.

The previous prime is 506537. The next prime is 506551. The reversal of 506539 is 935605.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 506539 - 2¹ = 506537 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506531) 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, 23014 + ... + 23035.

It is an arithmetic number, because the mean of its divisors is an integer number (138150).

2⁵⁰⁶⁵³⁹ is an apocalyptic number.

506539 is a deficient number, since it is larger than the sum of its proper divisors (46061).

506539 is a wasteful number, since it uses less digits than its factorization.

506539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46060.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 506539 is about 711.7155330608. The cubic root of 506539 is about 79.7145556470.

The spelling of 506539 in words is "five hundred six thousand, five hundred thirty-nine".