2182591 has 4 divisors (see below), whose sum is σ = 2199384. Its totient is φ = 2165800.

The previous prime is 2182577. The next prime is 2182601. The reversal of 2182591 is 1952812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2182591 - 2⁵ = 2182559 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 (2182561) by changing a digit.

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, 8200 + ... + 8461.

It is an arithmetic number, because the mean of its divisors is an integer number (549846).

2^2182591 is an apocalyptic number.

2182591 is a deficient number, since it is larger than the sum of its proper divisors (16793).

2182591 is a wasteful number, since it uses less digits than its factorization.

2182591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16792.

The product of its digits is 1440, while the sum is 28.

The square root of 2182591 is about 1477.3594687821. The cubic root of 2182591 is about 129.7151752327.

It can be divided in two parts, 218 and 2591, that added together give a square (2809 = 53²).

The spelling of 2182591 in words is "two million, one hundred eighty-two thousand, five hundred ninety-one".