520334321 has 16 divisors (see below), whose sum is σ = 586268928. Its totient is φ = 458601600.

The previous prime is 520334303. The next prime is 520334333. The reversal of 520334321 is 123433025.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520334321 is a prime.

It is a super-2 number, since 2×520334321² = 541495611221062082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520334371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14666 + ... + 35436.

It is an arithmetic number, because the mean of its divisors is an integer number (36641808).

Almost surely, 2^520334321 is an apocalyptic number.

It is an amenable number.

520334321 is a deficient number, since it is larger than the sum of its proper divisors (65934607).

520334321 is a wasteful number, since it uses less digits than its factorization.

520334321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20872.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 520334321 is about 22810.8377969771. The cubic root of 520334321 is about 804.3174498054.

Adding to 520334321 its reverse (123433025), we get a palindrome (643767346).

The spelling of 520334321 in words is "five hundred twenty million, three hundred thirty-four thousand, three hundred twenty-one".