2105555103 has 24 divisors (see below), whose sum is σ = 3088049328. Its totient is φ = 1382314752.

The previous prime is 2105555093. The next prime is 2105555107. The reversal of 2105555103 is 3015555012.

2105555103 is a `hidden beast` number, since 2 + 1 + 0 + 5 + 555 + 103 = 666.

It is not a de Polignac number, because 2105555103 - 2⁴ = 2105555087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105555107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153076 + ... + 166262.

It is an arithmetic number, because the mean of its divisors is an integer number (128668722).

Almost surely, 2^2105555103 is an apocalyptic number.

2105555103 is a deficient number, since it is larger than the sum of its proper divisors (982494225).

2105555103 is a wasteful number, since it uses less digits than its factorization.

2105555103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13463 (or 13460 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 2105555103 is about 45886.3280618530. The cubic root of 2105555103 is about 1281.7073373251.

Subtracting 2105555103 from its reverse (3015555012), we obtain a palindrome (909999909).

The spelling of 2105555103 in words is "two billion, one hundred five million, five hundred fifty-five thousand, one hundred three".