91276105 has 4 divisors (see below), whose sum is σ = 109531332. Its totient is φ = 73020880.

The previous prime is 91276103. The next prime is 91276117. The reversal of 91276105 is 50167219.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50167219 = 449 ⋅111731.

It can be written as a sum of positive squares in 2 ways, for example, as 64979721 + 26296384 = 8061^2 + 5128^2 .

It is not a de Polignac number, because 91276105 - 2¹ = 91276103 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91276103) 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, 9127606 + ... + 9127615.

It is an arithmetic number, because the mean of its divisors is an integer number (27382833).

Almost surely, 2^91276105 is an apocalyptic number.

It is an amenable number.

91276105 is a deficient number, since it is larger than the sum of its proper divisors (18255227).

91276105 is a wasteful number, since it uses less digits than its factorization.

91276105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18255226.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 91276105 is about 9553.8528877098. The cubic root of 91276105 is about 450.2485951527.

The spelling of 91276105 in words is "ninety-one million, two hundred seventy-six thousand, one hundred five".