91088543 has 8 divisors (see below), whose sum is σ = 112109088. Its totient is φ = 72069984.

The previous prime is 91088521. The next prime is 91088573. The reversal of 91088543 is 34588019.

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

It is not a de Polignac number, because 91088543 - 2⁸ = 91088287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91088497 and 91088506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91088513) 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, 500396 + ... + 500577.

It is an arithmetic number, because the mean of its divisors is an integer number (14013636).

Almost surely, 2^91088543 is an apocalyptic number.

91088543 is a deficient number, since it is larger than the sum of its proper divisors (21020545).

91088543 is a wasteful number, since it uses less digits than its factorization.

91088543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000993.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 91088543 is about 9544.0318000308. The cubic root of 91088543 is about 449.9399804725.

The spelling of 91088543 in words is "ninety-one million, eighty-eight thousand, five hundred forty-three".