97992171 has 12 divisors (see below), whose sum is σ = 141828960. Its totient is φ = 65196720.

The previous prime is 97992163. The next prime is 97992187. The reversal of 97992171 is 17129979.

It is not a de Polignac number, because 97992171 - 2³ = 97992163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97992161) 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 11 ways as a sum of consecutive naturals, for example, 6115 + ... + 15276.

It is an arithmetic number, because the mean of its divisors is an integer number (11819080).

Almost surely, 2^97992171 is an apocalyptic number.

97992171 is a deficient number, since it is larger than the sum of its proper divisors (43836789).

97992171 is a wasteful number, since it uses less digits than its factorization.

97992171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21906 (or 21903 counting only the distinct ones).

The product of its digits is 71442, while the sum is 45.

The square root of 97992171 is about 9899.0995045004. The cubic root of 97992171 is about 461.0313516320.

The spelling of 97992171 in words is "ninety-seven million, nine hundred ninety-two thousand, one hundred seventy-one".