2172941717 has 16 divisors (see below), whose sum is σ = 2336629680. Its totient is φ = 2013462528.

The previous prime is 2172941711. The next prime is 2172941759. The reversal of 2172941717 is 7171492712.

It can be written as a sum of positive squares in 8 ways, for example, as 747803716 + 1425138001 = 27346^2 + 37751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172941717 - 2⁸ = 2172941461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172941711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321509 + ... + 328197.

It is an arithmetic number, because the mean of its divisors is an integer number (146039355).

Almost surely, 2^2172941717 is an apocalyptic number.

It is an amenable number.

2172941717 is a deficient number, since it is larger than the sum of its proper divisors (163687963).

2172941717 is a wasteful number, since it uses less digits than its factorization.

2172941717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000.

The product of its digits is 49392, while the sum is 41.

The square root of 2172941717 is about 46614.8229321961. The cubic root of 2172941717 is about 1295.2373494981.

The spelling of 2172941717 in words is "two billion, one hundred seventy-two million, nine hundred forty-one thousand, seven hundred seventeen".