110091001 has 4 divisors (see below), whose sum is σ = 110136052. Its totient is φ = 110045952.

The previous prime is 110090987. The next prime is 110091029. The reversal of 110091001 is 100190011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100190011 = 8467 ⋅11833.

It can be written as a sum of positive squares in 2 ways, for example, as 86471401 + 23619600 = 9299^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 110091001 - 2¹⁹ = 109566713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110091071) 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, 18636 + ... + 23821.

It is an arithmetic number, because the mean of its divisors is an integer number (27534013).

Almost surely, 2^110091001 is an apocalyptic number.

It is an amenable number.

110091001 is a deficient number, since it is larger than the sum of its proper divisors (45051).

110091001 is an equidigital number, since it uses as much as digits as its factorization.

110091001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45050.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 110091001 is about 10492.4258872770. The cubic root of 110091001 is about 479.2740777716.

The spelling of 110091001 in words is "one hundred ten million, ninety-one thousand, one".