91485571 has 8 divisors (see below), whose sum is σ = 95248064. Its totient is φ = 87791040.

The previous prime is 91485521. The next prime is 91485587. The reversal of 91485571 is 17558419.

It is a happy number.

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 91485571 - 2¹¹ = 91483523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91485521) 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, 14235 + ... + 19636.

It is an arithmetic number, because the mean of its divisors is an integer number (11906008).

Almost surely, 2^91485571 is an apocalyptic number.

91485571 is a deficient number, since it is larger than the sum of its proper divisors (3762493).

91485571 is a wasteful number, since it uses less digits than its factorization.

91485571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33981.

The product of its digits is 50400, while the sum is 40.

The square root of 91485571 is about 9564.8089892062. The cubic root of 91485571 is about 450.5927513804.

The spelling of 91485571 in words is "ninety-one million, four hundred eighty-five thousand, five hundred seventy-one".