520039 has 8 divisors (see below), whose sum is σ = 566720. Its totient is φ = 474336.

The previous prime is 520031. The next prime is 520043. The reversal of 520039 is 930025.

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 520039 - 2³ = 520031 is a prime.

It is an Ulam number.

It is a Duffinian number.

520039 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 519998 and 520025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234 + ... + 1600.

It is an arithmetic number, because the mean of its divisors is an integer number (70840).

2⁵²⁰⁰³⁹ is an apocalyptic number.

520039 is a deficient number, since it is larger than the sum of its proper divisors (46681).

520039 is a wasteful number, since it uses less digits than its factorization.

520039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 520039 is about 721.1372962204. The cubic root of 520039 is about 80.4165254844.

The spelling of 520039 in words is "five hundred twenty thousand, thirty-nine".