12008257 has 4 divisors (see below), whose sum is σ = 12068800. Its totient is φ = 11947716.

The previous prime is 12008251. The next prime is 12008261. The reversal of 12008257 is 75280021.

12008257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 75280021 = 5857 ⋅12853.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12008257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12008251) 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, 29973 + ... + 30370.

It is an arithmetic number, because the mean of its divisors is an integer number (3017200).

Almost surely, 2^12008257 is an apocalyptic number.

It is an amenable number.

12008257 is a deficient number, since it is larger than the sum of its proper divisors (60543).

12008257 is an equidigital number, since it uses as much as digits as its factorization.

12008257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60542.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 12008257 is about 3465.2932054878. The cubic root of 12008257 is about 228.9953470575.

Adding to 12008257 its reverse (75280021), we get a palindrome (87288278).

The spelling of 12008257 in words is "twelve million, eight thousand, two hundred fifty-seven".