2881105 has 4 divisors (see below), whose sum is σ = 3457332. Its totient is φ = 2304880.

The previous prime is 2881097. The next prime is 2881117. The reversal of 2881105 is 5011882.

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 1096209 + 1784896 = 1047^2 + 1336^2 .

It is not a de Polignac number, because 2881105 - 2³ = 2881097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2881105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288106 + ... + 288115.

It is an arithmetic number, because the mean of its divisors is an integer number (864333).

2^2881105 is an apocalyptic number.

It is an amenable number.

2881105 is a deficient number, since it is larger than the sum of its proper divisors (576227).

2881105 is an equidigital number, since it uses as much as digits as its factorization.

2881105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576226.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 2881105 is about 1697.3818073728. The cubic root of 2881105 is about 142.2939259969.

Adding to 2881105 its reverse (5011882), we get a palindrome (7892987).

The spelling of 2881105 in words is "two million, eight hundred eighty-one thousand, one hundred five".