2105045500 has 48 divisors (see below), whose sum is σ = 4644922464. Its totient is φ = 833318400.

The previous prime is 2105045497. The next prime is 2105045513. The reversal of 2105045500 is 55405012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26799 + ... + 70201.

It is an arithmetic number, because the mean of its divisors is an integer number (96769218).

Almost surely, 2^2105045500 is an apocalyptic number.

2105045500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105045500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2322461232).

2105045500 is an abundant number, since it is smaller than the sum of its proper divisors (2539876964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105045500 is a wasteful number, since it uses less digits than its factorization.

2105045500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43519 (or 43507 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2105045500 is about 45880.7748408852. The cubic root of 2105045500 is about 1281.6039260196.

The spelling of 2105045500 in words is "two billion, one hundred five million, forty-five thousand, five hundred".