2105545550 has 24 divisors (see below), whose sum is σ = 3917608632. Its totient is φ = 841940000.

The previous prime is 2105545549. The next prime is 2105545571. The reversal of 2105545550 is 555455012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217820 + ... + 227280.

It is an arithmetic number, because the mean of its divisors is an integer number (163233693).

Almost surely, 2^2105545550 is an apocalyptic number.

2105545550 is a deficient number, since it is larger than the sum of its proper divisors (1812063082).

2105545550 is a wasteful number, since it uses less digits than its factorization.

2105545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13924 (or 13919 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 2105545550 is about 45886.2239675483. The cubic root of 2105545550 is about 1281.7053989338.

The spelling of 2105545550 in words is "two billion, one hundred five million, five hundred forty-five thousand, five hundred fifty".