2103655 has 4 divisors (see below), whose sum is σ = 2524392. Its totient is φ = 1682920.

The previous prime is 2103653. The next prime is 2103667. The reversal of 2103655 is 5563012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2103655 - 2¹ = 2103653 is a prime.

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 not an unprimeable number, because it can be changed into a prime (2103653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210361 + ... + 210370.

It is an arithmetic number, because the mean of its divisors is an integer number (631098).

2^2103655 is an apocalyptic number.

2103655 is a deficient number, since it is larger than the sum of its proper divisors (420737).

2103655 is an equidigital number, since it uses as much as digits as its factorization.

2103655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420736.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2103655 is about 1450.3982211793. The cubic root of 2103655 is about 128.1321673563.

Adding to 2103655 its reverse (5563012), we get a palindrome (7666667).

The spelling of 2103655 in words is "two million, one hundred three thousand, six hundred fifty-five".