12809057 has 2 divisors, whose sum is σ = 12809058. Its totient is φ = 12809056.

The previous prime is 12809053. The next prime is 12809101. The reversal of 12809057 is 75090821.

12809057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 355216 = 3529^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 12809057 - 2² = 12809053 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12809053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404528 + 6404529.

It is an arithmetic number, because the mean of its divisors is an integer number (6404529).

Almost surely, 2^12809057 is an apocalyptic number.

It is an amenable number.

12809057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12809057 is an equidigital number, since it uses as much as digits as its factorization.

12809057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 12809057 is about 3578.9742944034. The cubic root of 12809057 is about 233.9765786089.

Adding to 12809057 its reverse (75090821), we get a palindrome (87899878).

The spelling of 12809057 in words is "twelve million, eight hundred nine thousand, fifty-seven".