91955 has 8 divisors (see below), whose sum is σ = 112752. Its totient is φ = 71968.

The previous prime is 91951. The next prime is 91957. The reversal of 91955 is 55919.

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 91955 - 2² = 91951 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (2025) is a multiple of the sum of its prime divisors (405).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91955.

It is not an unprimeable number, because it can be changed into a prime (91951) 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, 92 + ... + 438.

It is an arithmetic number, because the mean of its divisors is an integer number (14094).

2⁹¹⁹⁵⁵ is an apocalyptic number.

91955 is a deficient number, since it is larger than the sum of its proper divisors (20797).

91955 is a wasteful number, since it uses less digits than its factorization.

91955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its digits is 2025, while the sum is 29.

The square root of 91955 is about 303.2408283856. The cubic root of 91955 is about 45.1362127890.

The spelling of 91955 in words is "ninety-one thousand, nine hundred fifty-five".