2172712252 has 12 divisors (see below), whose sum is σ = 3924899776. Its totient is φ = 1051312320.

The previous prime is 2172712237. The next prime is 2172712253. The reversal of 2172712252 is 2522172712.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172712253) 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 3 ways as a sum of consecutive naturals, for example, 8760813 + ... + 8761060.

Almost surely, 2^2172712252 is an apocalyptic number.

It is an amenable number.

2172712252 is a deficient number, since it is larger than the sum of its proper divisors (1752187524).

2172712252 is a wasteful number, since it uses less digits than its factorization.

2172712252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17521908 (or 17521906 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 2172712252 is about 46612.3615793064. The cubic root of 2172712252 is about 1295.1917550705.

Adding to 2172712252 its reverse (2522172712), we get a palindrome (4694884964).

The spelling of 2172712252 in words is "two billion, one hundred seventy-two million, seven hundred twelve thousand, two hundred fifty-two".