12172259 has 4 divisors (see below), whose sum is σ = 13278840. Its totient is φ = 11065680.

The previous prime is 12172253. The next prime is 12172271. The reversal of 12172259 is 95227121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12172259 - 2⁸ = 12172003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12172253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553274 + ... + 553295.

It is an arithmetic number, because the mean of its divisors is an integer number (3319710).

Almost surely, 2^12172259 is an apocalyptic number.

12172259 is a deficient number, since it is larger than the sum of its proper divisors (1106581).

12172259 is a wasteful number, since it uses less digits than its factorization.

12172259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106580.

The product of its digits is 2520, while the sum is 29.

The square root of 12172259 is about 3488.8764667153. The cubic root of 12172259 is about 230.0331332229.

It can be divided in two parts, 12 and 172259, that added together give a palindrome (172271).

The spelling of 12172259 in words is "twelve million, one hundred seventy-two thousand, two hundred fifty-nine".