91286201 has 4 divisors (see below), whose sum is σ = 91598052. Its totient is φ = 90974352.

The previous prime is 91286197. The next prime is 91286219. The reversal of 91286201 is 10268219.

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 44568976 + 46717225 = 6676^2 + 6835^2 .

It is a cyclic number.

It is not a de Polignac number, because 91286201 - 2² = 91286197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91286501) 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, 155486 + ... + 156071.

It is an arithmetic number, because the mean of its divisors is an integer number (22899513).

Almost surely, 2^91286201 is an apocalyptic number.

It is an amenable number.

91286201 is a deficient number, since it is larger than the sum of its proper divisors (311851).

91286201 is a wasteful number, since it uses less digits than its factorization.

91286201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311850.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 91286201 is about 9554.3812463184. The cubic root of 91286201 is about 450.2651951242.

The spelling of 91286201 in words is "ninety-one million, two hundred eighty-six thousand, two hundred one".