12352657 has 4 divisors (see below), whose sum is σ = 12585780. Its totient is φ = 12119536.

The previous prime is 12352649. The next prime is 12352699. The reversal of 12352657 is 75625321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75625321 = 223 ⋅339127.

It can be written as a sum of positive squares in 2 ways, for example, as 5716881 + 6635776 = 2391^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 12352657 - 2³ = 12352649 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12352757) 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, 116482 + ... + 116587.

It is an arithmetic number, because the mean of its divisors is an integer number (3146445).

Almost surely, 2^12352657 is an apocalyptic number.

It is an amenable number.

12352657 is a deficient number, since it is larger than the sum of its proper divisors (233123).

12352657 is an equidigital number, since it uses as much as digits as its factorization.

12352657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233122.

The product of its digits is 12600, while the sum is 31.

The square root of 12352657 is about 3514.6346894094. The cubic root of 12352657 is about 231.1639609798.

Adding to 12352657 its reverse (75625321), we get a palindrome (87977978).

The spelling of 12352657 in words is "twelve million, three hundred fifty-two thousand, six hundred fifty-seven".