2172571105 has 32 divisors (see below), whose sum is σ = 2750695200. Its totient is φ = 1645056000.

The previous prime is 2172571097. The next prime is 2172571111. The reversal of 2172571105 is 5011752712.

It can be written as a sum of positive squares in 16 ways, for example, as 120209296 + 2052361809 = 10964^2 + 45303^2 .

It is not a de Polignac number, because 2172571105 - 2³ = 2172571097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1595625 + ... + 1596985.

It is an arithmetic number, because the mean of its divisors is an integer number (85959225).

Almost surely, 2^2172571105 is an apocalyptic number.

It is an amenable number.

2172571105 is a deficient number, since it is larger than the sum of its proper divisors (578124095).

2172571105 is a wasteful number, since it uses less digits than its factorization.

2172571105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 4900, while the sum is 31.

The square root of 2172571105 is about 46610.8475035587. The cubic root of 2172571105 is about 1295.1637077318.

It can be divided in two parts, 2172571 and 105, that added together give a square (2172676 = 1474²).

The spelling of 2172571105 in words is "two billion, one hundred seventy-two million, five hundred seventy-one thousand, one hundred five".