2166259 has 8 divisors (see below), whose sum is σ = 2324160. Its totient is φ = 2011776.

The previous prime is 2166251. The next prime is 2166289. The reversal of 2166259 is 9526612.

2166259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166259 - 2³ = 2166251 is a prime.

It is a Duffinian number.

2166259 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166259.

It is not an unprimeable number, because it can be changed into a prime (2166251) 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 7 ways as a sum of consecutive naturals, for example, 537 + ... + 2149.

It is an arithmetic number, because the mean of its divisors is an integer number (290520).

2^2166259 is an apocalyptic number.

2166259 is a deficient number, since it is larger than the sum of its proper divisors (157901).

2166259 is a wasteful number, since it uses less digits than its factorization.

2166259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709.

The product of its digits is 6480, while the sum is 31.

The square root of 2166259 is about 1471.8216603923. The cubic root of 2166259 is about 129.3908184661.

The spelling of 2166259 in words is "two million, one hundred sixty-six thousand, two hundred fifty-nine".