2172712245 has 16 divisors (see below), whose sum is σ = 3792370752. Its totient is φ = 1053436160.

The previous prime is 2172712237. The next prime is 2172712253. The reversal of 2172712245 is 5422172712.

It is an interprime number because it is at equal distance from previous prime (2172712237) and next prime (2172712253).

It is not a de Polignac number, because 2172712245 - 2³ = 2172712237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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, 6583812 + ... + 6584141.

It is an arithmetic number, because the mean of its divisors is an integer number (237023172).

Almost surely, 2^2172712245 is an apocalyptic number.

It is an amenable number.

2172712245 is a deficient number, since it is larger than the sum of its proper divisors (1619658507).

2172712245 is a wasteful number, since it uses less digits than its factorization.

2172712245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13167972.

The product of its digits is 15680, while the sum is 33.

The square root of 2172712245 is about 46612.3615042190. The cubic root of 2172712245 is about 1295.1917536796.

Adding to 2172712245 its reverse (5422172712), we get a palindrome (7594884957).

It can be divided in two parts, 2172 and 712245, that added together give a palindrome (714417).

The spelling of 2172712245 in words is "two billion, one hundred seventy-two million, seven hundred twelve thousand, two hundred forty-five".