91088854 has 4 divisors (see below), whose sum is σ = 136633284. Its totient is φ = 45544426.

The previous prime is 91088843. The next prime is 91088863. The reversal of 91088854 is 45888019.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91088854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22772212 + ... + 22772215.

It is an arithmetic number, because the mean of its divisors is an integer number (34158321).

Almost surely, 2^91088854 is an apocalyptic number.

91088854 is a deficient number, since it is larger than the sum of its proper divisors (45544430).

91088854 is a wasteful number, since it uses less digits than its factorization.

91088854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45544429.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 91088854 is about 9544.0480929216. The cubic root of 91088854 is about 449.9404925427.

The spelling of 91088854 in words is "ninety-one million, eighty-eight thousand, eight hundred fifty-four".