91180201 has 4 divisors (see below), whose sum is σ = 104205952. Its totient is φ = 78154452.

The previous prime is 91180171. The next prime is 91180237. The reversal of 91180201 is 10208119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91180201 - 2¹³ = 91172009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91180261) 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, 6512865 + ... + 6512878.

It is an arithmetic number, because the mean of its divisors is an integer number (26051488).

Almost surely, 2^91180201 is an apocalyptic number.

It is an amenable number.

91180201 is a deficient number, since it is larger than the sum of its proper divisors (13025751).

91180201 is a wasteful number, since it uses less digits than its factorization.

91180201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13025750.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 91180201 is about 9548.8324417177. The cubic root of 91180201 is about 450.0908475018.

The spelling of 91180201 in words is "ninety-one million, one hundred eighty thousand, two hundred one".