12172522 has 8 divisors (see below), whose sum is σ = 18847872. Its totient is φ = 5889900.

The previous prime is 12172513. The next prime is 12172549. The reversal of 12172522 is 22527121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12172493 and 12172502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98104 + ... + 98227.

It is an arithmetic number, because the mean of its divisors is an integer number (2355984).

Almost surely, 2^12172522 is an apocalyptic number.

12172522 is a deficient number, since it is larger than the sum of its proper divisors (6675350).

12172522 is a wasteful number, since it uses less digits than its factorization.

12172522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196364.

The product of its digits is 560, while the sum is 22.

The square root of 12172522 is about 3488.9141577287. The cubic root of 12172522 is about 230.0347899485.

Adding to 12172522 its reverse (22527121), we get a palindrome (34699643).

The spelling of 12172522 in words is "twelve million, one hundred seventy-two thousand, five hundred twenty-two".