91126111 has 2 divisors, whose sum is σ = 91126112. Its totient is φ = 91126110.

The previous prime is 91126039. The next prime is 91126117. The reversal of 91126111 is 11162119.

It is a strong prime.

It is an emirp because it is prime and its reverse (11162119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91126111 - 2⁹ = 91125599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91126117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45563055 + 45563056.

It is an arithmetic number, because the mean of its divisors is an integer number (45563056).

Almost surely, 2^91126111 is an apocalyptic number.

91126111 is a deficient number, since it is larger than the sum of its proper divisors (1).

91126111 is an equidigital number, since it uses as much as digits as its factorization.

91126111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 22.

The square root of 91126111 is about 9545.9997381102. Note that the first 3 decimals coincide. The cubic root of 91126111 is about 450.0018287992.

The spelling of 91126111 in words is "ninety-one million, one hundred twenty-six thousand, one hundred eleven".