12897511 has 6 divisors (see below), whose sum is σ = 14176736. Its totient is φ = 11724900.

The previous prime is 12897499. The next prime is 12897529. The reversal of 12897511 is 11579821.

It is a happy number.

12897511 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12897511 - 2⁷ = 12897383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897541) 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 5 ways as a sum of consecutive naturals, for example, 53175 + ... + 53416.

Almost surely, 2^12897511 is an apocalyptic number.

12897511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12897511 is a deficient number, since it is larger than the sum of its proper divisors (1279225).

12897511 is a wasteful number, since it uses less digits than its factorization.

12897511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106613 (or 106602 counting only the distinct ones).

The product of its digits is 5040, while the sum is 34.

The square root of 12897511 is about 3591.3104850458. The cubic root of 12897511 is about 234.5139251266.

The spelling of 12897511 in words is "twelve million, eight hundred ninety-seven thousand, five hundred eleven".