2891085 has 16 divisors (see below), whose sum is σ = 4675776. Its totient is φ = 1525248.

The previous prime is 2891081. The next prime is 2891087. The reversal of 2891085 is 5801982.

It is a happy number.

2891085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2891085 - 2² = 2891081 is a prime.

It is a Curzon number.

2891085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (292236).

2^2891085 is an apocalyptic number.

It is an amenable number.

2891085 is a deficient number, since it is larger than the sum of its proper divisors (1784691).

2891085 is a wasteful number, since it uses less digits than its factorization.

2891085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2891085 is about 1700.3190877009. The cubic root of 2891085 is about 142.4580362740.

The spelling of 2891085 in words is "two million, eight hundred ninety-one thousand, eighty-five".