520022689 has 2 divisors, whose sum is σ = 520022690. Its totient is φ = 520022688.

The previous prime is 520022687. The next prime is 520022731. The reversal of 520022689 is 986220025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359747089 + 160275600 = 18967^2 + 12660^2 .

It is a cyclic number.

It is not a de Polignac number, because 520022689 - 2¹ = 520022687 is a prime.

Together with 520022687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (520022683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260011344 + 260011345.

It is an arithmetic number, because the mean of its divisors is an integer number (260011345).

Almost surely, 2^520022689 is an apocalyptic number.

It is an amenable number.

520022689 is a deficient number, since it is larger than the sum of its proper divisors (1).

520022689 is an equidigital number, since it uses as much as digits as its factorization.

520022689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 520022689 is about 22804.0059857912. The cubic root of 520022689 is about 804.1568472204.

It can be divided in two parts, 5200 and 22689, that added together give a square (27889 = 167²).

The spelling of 520022689 in words is "five hundred twenty million, twenty-two thousand, six hundred eighty-nine".