520382321 has 4 divisors (see below), whose sum is σ = 520468644. Its totient is φ = 520296000.

The previous prime is 520382311. The next prime is 520382323. The reversal of 520382321 is 123283025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 308388721 + 211993600 = 17561^2 + 14560^2 .

It is a cyclic number.

It is not a de Polignac number, because 520382321 - 2¹⁰ = 520381297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520382323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33380 + ... + 46421.

It is an arithmetic number, because the mean of its divisors is an integer number (130117161).

Almost surely, 2^520382321 is an apocalyptic number.

It is an amenable number.

520382321 is a deficient number, since it is larger than the sum of its proper divisors (86323).

520382321 is an equidigital number, since it uses as much as digits as its factorization.

520382321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86322.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 520382321 is about 22811.8899041706. The cubic root of 520382321 is about 804.3421813731.

The spelling of 520382321 in words is "five hundred twenty million, three hundred eighty-two thousand, three hundred twenty-one".