91496571 has 16 divisors (see below), whose sum is σ = 128768640. Its totient is φ = 57628800.

The previous prime is 91496569. The next prime is 91496591. The reversal of 91496571 is 17569419.

It is not a de Polignac number, because 91496571 - 2¹ = 91496569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91496501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20856 + ... + 24858.

It is an arithmetic number, because the mean of its divisors is an integer number (8048040).

Almost surely, 2^91496571 is an apocalyptic number.

91496571 is a deficient number, since it is larger than the sum of its proper divisors (37272069).

91496571 is a wasteful number, since it uses less digits than its factorization.

91496571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426.

The product of its digits is 68040, while the sum is 42.

The square root of 91496571 is about 9565.3839964740. The cubic root of 91496571 is about 450.6108100446.

The spelling of 91496571 in words is "ninety-one million, four hundred ninety-six thousand, five hundred seventy-one".