12890057 has 4 divisors (see below), whose sum is σ = 12964740. Its totient is φ = 12815376.

The previous prime is 12890047. The next prime is 12890071. The reversal of 12890057 is 75009821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75009821 = 139 ⋅539639.

It can be written as a sum of positive squares in 2 ways, for example, as 7268416 + 5621641 = 2696^2 + 2371^2 .

It is a cyclic number.

It is not a de Polignac number, because 12890057 - 2⁶ = 12889993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12890027) 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, 37082 + ... + 37427.

It is an arithmetic number, because the mean of its divisors is an integer number (3241185).

Almost surely, 2^12890057 is an apocalyptic number.

It is an amenable number.

12890057 is a deficient number, since it is larger than the sum of its proper divisors (74683).

12890057 is an equidigital number, since it uses as much as digits as its factorization.

12890057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74682.

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

The square root of 12890057 is about 3590.2725523280. The cubic root of 12890057 is about 234.4687380187.

Adding to 12890057 its reverse (75009821), we get a palindrome (87899878).

The spelling of 12890057 in words is "twelve million, eight hundred ninety thousand, fifty-seven".