2112591 has 16 divisors (see below), whose sum is σ = 3194240. Its totient is φ = 1231200.

The previous prime is 2112587. The next prime is 2112601. The reversal of 2112591 is 1952112.

It is not a de Polignac number, because 2112591 - 2² = 2112587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (199640).

2^2112591 is an apocalyptic number.

2112591 is a deficient number, since it is larger than the sum of its proper divisors (1081649).

2112591 is a wasteful number, since it uses less digits than its factorization.

2112591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its digits is 180, while the sum is 21.

The square root of 2112591 is about 1453.4754899894. The cubic root of 2112591 is about 128.3133395887.

The spelling of 2112591 in words is "two million, one hundred twelve thousand, five hundred ninety-one".