520771984 has 20 divisors (see below), whose sum is σ = 1010097180. Its totient is φ = 260101760.

The previous prime is 520771981. The next prime is 520771991. The reversal of 520771984 is 489177025.

It can be written as a sum of positive squares in 2 ways, for example, as 104611984 + 416160000 = 10228^2 + 20400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520771984.

It is not an unprimeable number, because it can be changed into a prime (520771981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2239 + ... + 32350.

It is an arithmetic number, because the mean of its divisors is an integer number (50504859).

Almost surely, 2^520771984 is an apocalyptic number.

It is an amenable number.

520771984 is a deficient number, since it is larger than the sum of its proper divisors (489325196).

520771984 is a wasteful number, since it uses less digits than its factorization.

520771984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35538 (or 35532 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 520771984 is about 22820.4290932489. The cubic root of 520771984 is about 804.5428954615.

The spelling of 520771984 in words is "five hundred twenty million, seven hundred seventy-one thousand, nine hundred eighty-four".