12173257 has 4 divisors (see below), whose sum is σ = 12456400. Its totient is φ = 11890116.

The previous prime is 12173251. The next prime is 12173263. The reversal of 12173257 is 75237121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75237121 = 17 ⋅4425713.

It is an interprime number because it is at equal distance from previous prime (12173251) and next prime (12173263).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12173257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12173251) 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, 141507 + ... + 141592.

It is an arithmetic number, because the mean of its divisors is an integer number (3114100).

Almost surely, 2^12173257 is an apocalyptic number.

It is an amenable number.

12173257 is a deficient number, since it is larger than the sum of its proper divisors (283143).

12173257 is an equidigital number, since it uses as much as digits as its factorization.

12173257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283142.

The product of its digits is 2940, while the sum is 28.

The square root of 12173257 is about 3489.0194897707. The cubic root of 12173257 is about 230.0394198345.

The spelling of 12173257 in words is "twelve million, one hundred seventy-three thousand, two hundred fifty-seven".