520505703 has 16 divisors (see below), whose sum is σ = 811705600. Its totient is φ = 328740120.

The previous prime is 520505651. The next prime is 520505707. The reversal of 520505703 is 307505025.

It is not a de Polignac number, because 520505703 - 2²⁵ = 486951271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520505707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506803 + ... + 507828.

It is an arithmetic number, because the mean of its divisors is an integer number (50731600).

Almost surely, 2^520505703 is an apocalyptic number.

520505703 is a deficient number, since it is larger than the sum of its proper divisors (291199897).

520505703 is a wasteful number, since it uses less digits than its factorization.

520505703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014659 (or 1014653 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 520505703 is about 22814.5940792292. The cubic root of 520505703 is about 804.4057458594.

The spelling of 520505703 in words is "five hundred twenty million, five hundred five thousand, seven hundred three".