520327581 has 8 divisors (see below), whose sum is σ = 702129120. Its totient is φ = 342705552.

The previous prime is 520327573. The next prime is 520327589. The reversal of 520327581 is 185723025.

It is an interprime number because it is at equal distance from previous prime (520327573) and next prime (520327589).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520327581 - 2³ = 520327573 is a prime.

It is a super-2 number, since 2×520327581² = 541481583098623122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520327589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044586 + ... + 1045083.

It is an arithmetic number, because the mean of its divisors is an integer number (87766140).

Almost surely, 2^520327581 is an apocalyptic number.

It is an amenable number.

520327581 is a deficient number, since it is larger than the sum of its proper divisors (181801539).

520327581 is a wasteful number, since it uses less digits than its factorization.

520327581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089755.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 520327581 is about 22810.6900597067. The cubic root of 520327581 is about 804.3139769593.

The spelling of 520327581 in words is "five hundred twenty million, three hundred twenty-seven thousand, five hundred eighty-one".