523022172173 has 2 divisors, whose sum is σ = 523022172174. Its totient is φ = 523022172172.

The previous prime is 523022172149. The next prime is 523022172199. The reversal of 523022172173 is 371271220325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442069403689 + 80952768484 = 664883^2 + 284522^2 .

It is a cyclic number.

It is not a de Polignac number, because 523022172173 - 2¹² = 523022168077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523022172103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261511086086 + 261511086087.

It is an arithmetic number, because the mean of its divisors is an integer number (261511086087).

Almost surely, 2^523022172173 is an apocalyptic number.

It is an amenable number.

523022172173 is a deficient number, since it is larger than the sum of its proper divisors (1).

523022172173 is an equidigital number, since it uses as much as digits as its factorization.

523022172173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

Adding to 523022172173 its reverse (371271220325), we get a palindrome (894293392498).

The spelling of 523022172173 in words is "five hundred twenty-three billion, twenty-two million, one hundred seventy-two thousand, one hundred seventy-three".