2159005 has 4 divisors (see below), whose sum is σ = 2590812. Its totient is φ = 1727200.

The previous prime is 2158999. The next prime is 2159023. The reversal of 2159005 is 5009512.

2159005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1279161 + 879844 = 1131^2 + 938^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2159005 is a prime.

It is a super-2 number, since 2×2159005² = 9322605180050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 215896 + ... + 215905.

It is an arithmetic number, because the mean of its divisors is an integer number (647703).

2^2159005 is an apocalyptic number.

It is an amenable number.

2159005 is a deficient number, since it is larger than the sum of its proper divisors (431807).

2159005 is an equidigital number, since it uses as much as digits as its factorization.

2159005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431806.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2159005 is about 1469.3553008037. The cubic root of 2159005 is about 129.2462296264.

The spelling of 2159005 in words is "two million, one hundred fifty-nine thousand, five".