91456771 has 4 divisors (see below), whose sum is σ = 104522032. Its totient is φ = 78391512.

The previous prime is 91456723. The next prime is 91456801. The reversal of 91456771 is 17765419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91456771 - 2⁷ = 91456643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91453771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6532620 + ... + 6532633.

It is an arithmetic number, because the mean of its divisors is an integer number (26130508).

Almost surely, 2^91456771 is an apocalyptic number.

91456771 is a deficient number, since it is larger than the sum of its proper divisors (13065261).

91456771 is a wasteful number, since it uses less digits than its factorization.

91456771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13065260.

The product of its digits is 52920, while the sum is 40.

The square root of 91456771 is about 9563.3033518759. The cubic root of 91456771 is about 450.5454636566.

The spelling of 91456771 in words is "ninety-one million, four hundred fifty-six thousand, seven hundred seventy-one".