12166257 has 8 divisors (see below), whose sum is σ = 16379584. Its totient is φ = 8031888.

The previous prime is 12166249. The next prime is 12166261. The reversal of 12166257 is 75266121.

12166257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12166257 - 2³ = 12166249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12166207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19378 + ... + 19995.

It is an arithmetic number, because the mean of its divisors is an integer number (2047448).

Almost surely, 2^12166257 is an apocalyptic number.

It is an amenable number.

12166257 is a deficient number, since it is larger than the sum of its proper divisors (4213327).

12166257 is a wasteful number, since it uses less digits than its factorization.

12166257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39479.

The product of its digits is 5040, while the sum is 30.

The square root of 12166257 is about 3488.0161983569. The cubic root of 12166257 is about 229.9953181152.

The spelling of 12166257 in words is "twelve million, one hundred sixty-six thousand, two hundred fifty-seven".