520807 has 8 divisors (see below), whose sum is σ = 608256. Its totient is φ = 436632.

The previous prime is 520787. The next prime is 520813. The reversal of 520807 is 708025.

520807 is nontrivially palindromic in base 6.

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

It is not a de Polignac number, because 520807 - 2⁷ = 520679 is a prime.

It is a Duffinian number.

520807 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520837) 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, 463 + ... + 1120.

It is an arithmetic number, because the mean of its divisors is an integer number (76032).

2⁵²⁰⁸⁰⁷ is an apocalyptic number.

520807 is a deficient number, since it is larger than the sum of its proper divisors (87449).

520807 is a wasteful number, since it uses less digits than its factorization.

520807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 520807 is about 721.6695919879. The cubic root of 520807 is about 80.4560927181.

The spelling of 520807 in words is "five hundred twenty thousand, eight hundred seven".