522023643 has 8 divisors (see below), whose sum is σ = 773368400. Its totient is φ = 348015744.

The previous prime is 522023629. The next prime is 522023653. The reversal of 522023643 is 346320225.

It is not a de Polignac number, because 522023643 - 2⁵ = 522023611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 19334209 = 522023643 / (5 + 2 + 2 + 0 + 2 + 3 + 6 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522023653) 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 7 ways as a sum of consecutive naturals, for example, 9667078 + ... + 9667131.

It is an arithmetic number, because the mean of its divisors is an integer number (96671050).

Almost surely, 2^522023643 is an apocalyptic number.

522023643 is a deficient number, since it is larger than the sum of its proper divisors (251344757).

522023643 is a wasteful number, since it uses less digits than its factorization.

522023643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19334218 (or 19334212 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 522023643 is about 22847.8367247317. The cubic root of 522023643 is about 805.1869442247.

Adding to 522023643 its reverse (346320225), we get a palindrome (868343868).

The spelling of 522023643 in words is "five hundred twenty-two million, twenty-three thousand, six hundred forty-three".