2105171562 has 16 divisors (see below), whose sum is σ = 4534215840. Its totient is φ = 647745072.

The previous prime is 2105171561. The next prime is 2105171599. The reversal of 2105171562 is 2651715012.

It is not an unprimeable number, because it can be changed into a prime (2105171561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13494612 + ... + 13494767.

It is an arithmetic number, because the mean of its divisors is an integer number (283388490).

Almost surely, 2^2105171562 is an apocalyptic number.

2105171562 is an abundant number, since it is smaller than the sum of its proper divisors (2429044278).

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

2105171562 is a wasteful number, since it uses less digits than its factorization.

2105171562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26989397.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 2105171562 is about 45882.1486201333. The cubic root of 2105171562 is about 1281.6295087333.

Adding to 2105171562 its reverse (2651715012), we get a palindrome (4756886574).

The spelling of 2105171562 in words is "two billion, one hundred five million, one hundred seventy-one thousand, five hundred sixty-two".