522105223 has 4 divisors (see below), whose sum is σ = 523131480. Its totient is φ = 521078968.

The previous prime is 522105209. The next prime is 522105229. The reversal of 522105223 is 322501225.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522105223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 522105194 and 522105203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522105229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512365 + ... + 513382.

It is an arithmetic number, because the mean of its divisors is an integer number (130782870).

Almost surely, 2^522105223 is an apocalyptic number.

522105223 is a deficient number, since it is larger than the sum of its proper divisors (1026257).

522105223 is a wasteful number, since it uses less digits than its factorization.

522105223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026256.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 522105223 is about 22849.6219443561. The cubic root of 522105223 is about 805.2288859582.

Adding to 522105223 its reverse (322501225), we get a palindrome (844606448).

The spelling of 522105223 in words is "five hundred twenty-two million, one hundred five thousand, two hundred twenty-three".