91471 has 8 divisors (see below), whose sum is σ = 98784. Its totient is φ = 84480.

The previous prime is 91463. The next prime is 91493. The reversal of 91471 is 17419.

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

It is a cyclic number.

It is not a de Polignac number, because 91471 - 2³ = 91463 is a prime.

It is a super-3 number, since 3×91471³ = 2295998160240333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91411) 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, 895 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (12348).

2⁹¹⁴⁷¹ is an apocalyptic number.

91471 is a deficient number, since it is larger than the sum of its proper divisors (7313).

91471 is a wasteful number, since it uses less digits than its factorization.

91471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161.

The product of its digits is 252, while the sum is 22.

The square root of 91471 is about 302.4417299250. The cubic root of 91471 is about 45.0568827988.

Subtracting from 91471 its product of digits (252), we obtain a palindrome (91219).

The spelling of 91471 in words is "ninety-one thousand, four hundred seventy-one".