97100191 has 2 divisors, whose sum is σ = 97100192. Its totient is φ = 97100190.

The previous prime is 97100189. The next prime is 97100233. The reversal of 97100191 is 19100179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97100191 - 2¹ = 97100189 is a prime.

Together with 97100189, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97100111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48550095 + 48550096.

It is an arithmetic number, because the mean of its divisors is an integer number (48550096).

Almost surely, 2^97100191 is an apocalyptic number.

97100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

97100191 is an equidigital number, since it uses as much as digits as its factorization.

97100191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 97100191 is about 9853.9429164168. The cubic root of 97100191 is about 459.6282298636.

The spelling of 97100191 in words is "ninety-seven million, one hundred thousand, one hundred ninety-one".