97611191 has 2 divisors, whose sum is σ = 97611192. Its totient is φ = 97611190.

The previous prime is 97611181. The next prime is 97611203. The reversal of 97611191 is 19111679.

It is a weak prime.

It is an emirp because it is prime and its reverse (19111679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97611191 - 2¹⁰ = 97610167 is a prime.

It is a Chen prime.

It is equal to p_5631848 and since 97611191 and 5631848 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97611121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48805595 + 48805596.

It is an arithmetic number, because the mean of its divisors is an integer number (48805596).

Almost surely, 2^97611191 is an apocalyptic number.

97611191 is a deficient number, since it is larger than the sum of its proper divisors (1).

97611191 is an equidigital number, since it uses as much as digits as its factorization.

97611191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 35.

The square root of 97611191 is about 9879.8375998799. The cubic root of 97611191 is about 460.4331002900.

It can be divided in two parts, 976 and 11191, that added together give a cube (12167 = 23³).

The spelling of 97611191 in words is "ninety-seven million, six hundred eleven thousand, one hundred ninety-one".