91292371 has 4 divisors (see below), whose sum is σ = 91324744. Its totient is φ = 91260000.

The previous prime is 91292353. The next prime is 91292389. The reversal of 91292371 is 17329219.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17329219 = 211 ⋅82129.

It is an interprime number because it is at equal distance from previous prime (91292353) and next prime (91292389).

It is a 5-Lehmer number, since φ(91292371) divides (91292371-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 91292371 - 2⁹ = 91291859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91292171) 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, 11505 + ... + 17746.

It is an arithmetic number, because the mean of its divisors is an integer number (22831186).

Almost surely, 2^91292371 is an apocalyptic number.

91292371 is a deficient number, since it is larger than the sum of its proper divisors (32373).

91292371 is a wasteful number, since it uses less digits than its factorization.

91292371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32372.

The product of its digits is 6804, while the sum is 34.

The square root of 91292371 is about 9554.7041293805. The cubic root of 91292371 is about 450.2753393140.

The spelling of 91292371 in words is "ninety-one million, two hundred ninety-two thousand, three hundred seventy-one".