2159105 has 16 divisors (see below), whose sum is σ = 2842560. Its totient is φ = 1564608.

The previous prime is 2159093. The next prime is 2159147. The reversal of 2159105 is 5019512.

It is a cyclic number.

It is not a de Polignac number, because 2159105 - 2⁶ = 2159041 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3554 + ... + 4116.

It is an arithmetic number, because the mean of its divisors is an integer number (177660).

2^2159105 is an apocalyptic number.

It is an amenable number.

2159105 is a deficient number, since it is larger than the sum of its proper divisors (683455).

2159105 is a wasteful number, since it uses less digits than its factorization.

2159105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 2159105 is about 1469.3893289391. The cubic root of 2159105 is about 129.2482250553.

The spelling of 2159105 in words is "two million, one hundred fifty-nine thousand, one hundred five".