97997297 has 4 divisors (see below), whose sum is σ = 98112240. Its totient is φ = 97882356.

The previous prime is 97997279. The next prime is 97997321. The reversal of 97997297 is 79279979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97997297 - 2¹⁸ = 97735153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97997267) 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, 56183 + ... + 57900.

It is an arithmetic number, because the mean of its divisors is an integer number (24528060).

Almost surely, 2^97997297 is an apocalyptic number.

It is an amenable number.

97997297 is a deficient number, since it is larger than the sum of its proper divisors (114943).

97997297 is a wasteful number, since it uses less digits than its factorization.

97997297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114942.

The product of its digits is 4500846, while the sum is 59.

The square root of 97997297 is about 9899.3584135539. The cubic root of 97997297 is about 461.0393903882.

The spelling of 97997297 in words is "ninety-seven million, nine hundred ninety-seven thousand, two hundred ninety-seven".