91055655 has 24 divisors (see below), whose sum is σ = 167115312. Its totient is φ = 45705984.

The previous prime is 91055647. The next prime is 91055659. The reversal of 91055655 is 55655019.

91055655 is a `hidden beast` number, since 91 + 0 + 5 + 565 + 5 = 666.

It is not a de Polignac number, because 91055655 - 2³ = 91055647 is a prime.

It is a super-2 number, since 2×91055655² = 16582264614958050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91055659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58749 + ... + 60278.

It is an arithmetic number, because the mean of its divisors is an integer number (6963138).

Almost surely, 2^91055655 is an apocalyptic number.

91055655 is a deficient number, since it is larger than the sum of its proper divisors (76059657).

91055655 is a wasteful number, since it uses less digits than its factorization.

91055655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119055 (or 119052 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The square root of 91055655 is about 9542.3086829132. The cubic root of 91055655 is about 449.8858228845.

It can be divided in two parts, 910 and 55655, that added together give a palindrome (56565).

The spelling of 91055655 in words is "ninety-one million, fifty-five thousand, six hundred fifty-five".