91648101 has 4 divisors (see below), whose sum is σ = 122197472. Its totient is φ = 61098732.

The previous prime is 91648099. The next prime is 91648111. The reversal of 91648101 is 10184619.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10184619 = 3 ⋅3394873.

It is not a de Polignac number, because 91648101 - 2¹ = 91648099 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91648111) 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, 15274681 + ... + 15274686.

It is an arithmetic number, because the mean of its divisors is an integer number (30549368).

Almost surely, 2^91648101 is an apocalyptic number.

It is an amenable number.

91648101 is a deficient number, since it is larger than the sum of its proper divisors (30549371).

91648101 is a wasteful number, since it uses less digits than its factorization.

91648101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30549370.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 91648101 is about 9573.3014681457. The cubic root of 91648101 is about 450.8594291855.

The spelling of 91648101 in words is "ninety-one million, six hundred forty-eight thousand, one hundred one".