91445115 has 16 divisors (see below), whose sum is σ = 146488608. Its totient is φ = 48711936.

The previous prime is 91445113. The next prime is 91445143. The reversal of 91445115 is 51154419.

It is not a de Polignac number, because 91445115 - 2¹ = 91445113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91445111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11097 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (9155538).

Almost surely, 2^91445115 is an apocalyptic number.

91445115 is a deficient number, since it is larger than the sum of its proper divisors (55043493).

91445115 is a wasteful number, since it uses less digits than its factorization.

91445115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7358.

The product of its digits is 3600, while the sum is 30.

The square root of 91445115 is about 9562.6939196024. The cubic root of 91445115 is about 450.5263224420.

The spelling of 91445115 in words is "ninety-one million, four hundred forty-five thousand, one hundred fifteen".