520944823 has 12 divisors (see below), whose sum is σ = 607014432. Its totient is φ = 445774560.

The previous prime is 520944817. The next prime is 520944839. The reversal of 520944823 is 328449025.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-520944823 is a prime.

It is a super-2 number, since 2×520944823² = 542767017221002658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520944883) 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 in 11 ways as a sum of consecutive naturals, for example, 21618 + ... + 38848.

It is an arithmetic number, because the mean of its divisors is an integer number (50584536).

Almost surely, 2^520944823 is an apocalyptic number.

520944823 is a deficient number, since it is larger than the sum of its proper divisors (86069609).

520944823 is a wasteful number, since it uses less digits than its factorization.

520944823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17862 (or 17855 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 520944823 is about 22824.2157148937. The cubic root of 520944823 is about 804.6318921900.

The spelling of 520944823 in words is "five hundred twenty million, nine hundred forty-four thousand, eight hundred twenty-three".