8197173522 has 24 divisors (see below), whose sum is σ = 17763405660. Its totient is φ = 2731950720.

The previous prime is 8197173521. The next prime is 8197173529. The reversal of 8197173522 is 2253717918.

It can be written as a sum of positive squares in 2 ways, for example, as 8001481401 + 195692121 = 89451^2 + 13989^2 .

It is not an unprimeable number, because it can be changed into a prime (8197173521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89854 + ... + 156422.

Almost surely, 2^8197173522 is an apocalyptic number.

8197173522 is an abundant number, since it is smaller than the sum of its proper divisors (9566232138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8197173522 is a wasteful number, since it uses less digits than its factorization.

8197173522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73418 (or 73415 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 8197173522 is about 90538.2434223240. The cubic root of 8197173522 is about 2016.2979544146.

The spelling of 8197173522 in words is "eight billion, one hundred ninety-seven million, one hundred seventy-three thousand, five hundred twenty-two".