2105505 has 24 divisors (see below), whose sum is σ = 3706560. Its totient is φ = 1105440.

The previous prime is 2105503. The next prime is 2105507. The reversal of 2105505 is 5055012.

It is an interprime number because it is at equal distance from previous prime (2105503) and next prime (2105507).

It is not a de Polignac number, because 2105505 - 2¹ = 2105503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2866 + ... + 3524.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2^2105505 is an apocalyptic number.

It is an amenable number.

2105505 is a deficient number, since it is larger than the sum of its proper divisors (1601055).

2105505 is a wasteful number, since it uses less digits than its factorization.

2105505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 2105505 is about 1451.0358369110. The cubic root of 2105505 is about 128.1697170902.

The spelling of 2105505 in words is "two million, one hundred five thousand, five hundred five".