520889329 has 9 divisors (see below), whose sum is σ = 540156747. Its totient is φ = 502288584.

The previous prime is 520889287. The next prime is 520889381. The reversal of 520889329 is 923988025.

The square root of 520889329 is 22823.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 273141729 + 247747600 = 16527^2 + 15740^2 .

It is not a de Polignac number, because 520889329 - 2⁹ = 520888817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520889729) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 661474 + ... + 662260.

Almost surely, 2^520889329 is an apocalyptic number.

520889329 is the 22823-rd square number.

520889329 is the 11412-nd centered octagonal number.

It is an amenable number.

520889329 is a deficient number, since it is larger than the sum of its proper divisors (19267418).

520889329 is an frugal number, since it uses more digits than its factorization.

520889329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The cubic root of 520889329 is about 804.6033198564.

The spelling of 520889329 in words is "five hundred twenty million, eight hundred eighty-nine thousand, three hundred twenty-nine".