2105522045 has 16 divisors (see below), whose sum is σ = 2761138368. Its totient is φ = 1528611840.

The previous prime is 2105522011. The next prime is 2105522059. The reversal of 2105522045 is 5402255012.

It is a de Polignac number, because none of the positive numbers 2^k-2105522045 is a prime.

It is a Duffinian number.

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, 1439 + ... + 64908.

It is an arithmetic number, because the mean of its divisors is an integer number (172571148).

Almost surely, 2^2105522045 is an apocalyptic number.

It is an amenable number.

2105522045 is a deficient number, since it is larger than the sum of its proper divisors (655616323).

2105522045 is a wasteful number, since it uses less digits than its factorization.

2105522045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66940.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2105522045 is about 45885.9678442114. The cubic root of 2105522045 is about 1281.7006295290.

Adding to 2105522045 its reverse (5402255012), we get a palindrome (7507777057).

It can be divided in two parts, 210 and 5522045, that added together give a palindrome (5522255).

The spelling of 2105522045 in words is "two billion, one hundred five million, five hundred twenty-two thousand, forty-five".