197117572 has 12 divisors (see below), whose sum is σ = 345064860. Its totient is φ = 98527616.

The previous prime is 197117563. The next prime is 197117573. The reversal of 197117572 is 275711791.

It can be written as a sum of positive squares in 2 ways, for example, as 90326016 + 106791556 = 9504^2 + 10334^2 .

It is not an unprimeable number, because it can be changed into a prime (197117573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12048 + ... + 23224.

It is an arithmetic number, because the mean of its divisors is an integer number (28755405).

Almost surely, 2^197117572 is an apocalyptic number.

It is an amenable number.

197117572 is a deficient number, since it is larger than the sum of its proper divisors (147947288).

197117572 is a wasteful number, since it uses less digits than its factorization.

197117572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15590 (or 15588 counting only the distinct ones).

The product of its digits is 30870, while the sum is 40.

The square root of 197117572 is about 14039.8565519737. The cubic root of 197117572 is about 581.9805183939.

The spelling of 197117572 in words is "one hundred ninety-seven million, one hundred seventeen thousand, five hundred seventy-two".