91245113 has 2 divisors, whose sum is σ = 91245114. Its totient is φ = 91245112.

The previous prime is 91245083. The next prime is 91245173. The reversal of 91245113 is 31154219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87759424 + 3485689 = 9368^2 + 1867^2 .

It is a cyclic number.

It is not a de Polignac number, because 91245113 - 2¹⁰ = 91244089 is a prime.

It is not a weakly prime, because it can be changed into another prime (91245173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45622556 + 45622557.

It is an arithmetic number, because the mean of its divisors is an integer number (45622557).

Almost surely, 2^91245113 is an apocalyptic number.

It is an amenable number.

91245113 is a deficient number, since it is larger than the sum of its proper divisors (1).

91245113 is an equidigital number, since it uses as much as digits as its factorization.

91245113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 91245113 is about 9552.2307865755. The cubic root of 91245113 is about 450.1976300650.

The spelling of 91245113 in words is "ninety-one million, two hundred forty-five thousand, one hundred thirteen".