91105071 has 8 divisors (see below), whose sum is σ = 122103600. Its totient is φ = 60421632.

The previous prime is 91105061. The next prime is 91105073. The reversal of 91105071 is 17050119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91105071 - 2¹⁴ = 91088687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91105073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78096 + ... + 79253.

It is an arithmetic number, because the mean of its divisors is an integer number (15262950).

Almost surely, 2^91105071 is an apocalyptic number.

91105071 is a deficient number, since it is larger than the sum of its proper divisors (30998529).

91105071 is a wasteful number, since it uses less digits than its factorization.

91105071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157545.

The product of its (nonzero) digits is 315, while the sum is 24.

The square root of 91105071 is about 9544.8976421961. The cubic root of 91105071 is about 449.9671926700.

The spelling of 91105071 in words is "ninety-one million, one hundred five thousand, seventy-one".