97297191 has 12 divisors (see below), whose sum is σ = 143531232. Its totient is φ = 63484416.

The previous prime is 97297163. The next prime is 97297201. The reversal of 97297191 is 19179279.

It is not a de Polignac number, because 97297191 - 2⁵ = 97297159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97297091) 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, 114586 + ... + 115431.

It is an arithmetic number, because the mean of its divisors is an integer number (11960936).

Almost surely, 2^97297191 is an apocalyptic number.

97297191 is a deficient number, since it is larger than the sum of its proper divisors (46234041).

97297191 is a wasteful number, since it uses less digits than its factorization.

97297191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230070 (or 230067 counting only the distinct ones).

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

The square root of 97297191 is about 9863.9338501432. The cubic root of 97297191 is about 459.9388560822.

The spelling of 97297191 in words is "ninety-seven million, two hundred ninety-seven thousand, one hundred ninety-one".