91882205 has 4 divisors (see below), whose sum is σ = 110258652. Its totient is φ = 73505760.

The previous prime is 91882199. The next prime is 91882207. The reversal of 91882205 is 50228819.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10413529 + 81468676 = 3227^2 + 9026^2 .

It is not a de Polignac number, because 91882205 - 2⁸ = 91881949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91882207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9188216 + ... + 9188225.

It is an arithmetic number, because the mean of its divisors is an integer number (27564663).

Almost surely, 2^91882205 is an apocalyptic number.

It is an amenable number.

91882205 is a deficient number, since it is larger than the sum of its proper divisors (18376447).

91882205 is a wasteful number, since it uses less digits than its factorization.

91882205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18376446.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 91882205 is about 9585.5205909747. The cubic root of 91882205 is about 451.2429914274.

The spelling of 91882205 in words is "ninety-one million, eight hundred eighty-two thousand, two hundred five".