2105555 has 8 divisors (see below), whose sum is σ = 2588544. Its totient is φ = 1643200.

The previous prime is 2105549. The next prime is 2105557. The reversal of 2105555 is 5555012.

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

It is not a de Polignac number, because 2105555 - 2¹⁶ = 2040019 is a prime.

It is a Duffinian number.

2105555 is a modest number, since divided by 5555 gives 210 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2105555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105557) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4931 + ... + 5340.

It is an arithmetic number, because the mean of its divisors is an integer number (323568).

2^2105555 is an apocalyptic number.

2105555 is a deficient number, since it is larger than the sum of its proper divisors (482989).

2105555 is a wasteful number, since it uses less digits than its factorization.

2105555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10317.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 2105555 is about 1451.0530658801. The cubic root of 2105555 is about 128.1707316425.

The spelling of 2105555 in words is "two million, one hundred five thousand, five hundred fifty-five".