520806323 has 8 divisors (see below), whose sum is σ = 525326256. Its totient is φ = 516304800.

The previous prime is 520806311. The next prime is 520806361. The reversal of 520806323 is 323608025.

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 520806323 - 2²⁰ = 519757747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520806623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55565 + ... + 64257.

It is an arithmetic number, because the mean of its divisors is an integer number (65665782).

Almost surely, 2^520806323 is an apocalyptic number.

520806323 is a deficient number, since it is larger than the sum of its proper divisors (4519933).

520806323 is a wasteful number, since it uses less digits than its factorization.

520806323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9205.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 520806323 is about 22821.1814549554. The cubic root of 520806323 is about 804.5605785629.

The spelling of 520806323 in words is "five hundred twenty million, eight hundred six thousand, three hundred twenty-three".