91039055 has 8 divisors (see below), whose sum is σ = 112199712. Its totient is φ = 70862688.

The previous prime is 91039049. The next prime is 91039073. The reversal of 91039055 is 55093019.

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 91039055 - 2¹² = 91034959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245867 + ... + 246236.

It is an arithmetic number, because the mean of its divisors is an integer number (14024964).

Almost surely, 2^91039055 is an apocalyptic number.

91039055 is a deficient number, since it is larger than the sum of its proper divisors (21160657).

91039055 is a wasteful number, since it uses less digits than its factorization.

91039055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492145.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 91039055 is about 9541.4388327967. The cubic root of 91039055 is about 449.8584822486.

The spelling of 91039055 in words is "ninety-one million, thirty-nine thousand, fifty-five".