2105055305 has 4 divisors (see below), whose sum is σ = 2526066372. Its totient is φ = 1684044240.

The previous prime is 2105055263. The next prime is 2105055313. The reversal of 2105055305 is 5035505012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 388444681 + 1716610624 = 19709^2 + 41432^2 .

It is not a de Polignac number, because 2105055305 - 2¹² = 2105051209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210505526 + ... + 210505535.

It is an arithmetic number, because the mean of its divisors is an integer number (631516593).

Almost surely, 2^2105055305 is an apocalyptic number.

It is an amenable number.

2105055305 is a deficient number, since it is larger than the sum of its proper divisors (421011067).

2105055305 is an equidigital number, since it uses as much as digits as its factorization.

2105055305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421011066.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 2105055305 is about 45880.8816937949. The cubic root of 2105055305 is about 1281.6059158590.

The spelling of 2105055305 in words is "two billion, one hundred five million, fifty-five thousand, three hundred five".