91010201 has 8 divisors (see below), whose sum is σ = 93585408. Its totient is φ = 88452000.

The previous prime is 91010173. The next prime is 91010219. The reversal of 91010201 is 10201019.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91010201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91010261) 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, 7016 + ... + 15206.

It is an arithmetic number, because the mean of its divisors is an integer number (11698176).

Almost surely, 2^91010201 is an apocalyptic number.

It is an amenable number.

91010201 is a deficient number, since it is larger than the sum of its proper divisors (2575207).

91010201 is a wasteful number, since it uses less digits than its factorization.

91010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8503.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 91010201 is about 9539.9266768671. The cubic root of 91010201 is about 449.8109510427.

It can be divided in two parts, 910 and 10201, that added together give a palindrome (11111).

The spelling of 91010201 in words is "ninety-one million, ten thousand, two hundred one".