12689051 has 2 divisors, whose sum is σ = 12689052. Its totient is φ = 12689050.

The previous prime is 12689029. The next prime is 12689057. The reversal of 12689051 is 15098621.

It is a strong prime.

It is an emirp because it is prime and its reverse (15098621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12689051 - 2¹⁸ = 12426907 is a prime.

It is a super-2 number, since 2×12689051² = 322024030561202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12688999 and 12689017.

It is not a weakly prime, because it can be changed into another prime (12689057) 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 as a sum of consecutive naturals, namely, 6344525 + 6344526.

It is an arithmetic number, because the mean of its divisors is an integer number (6344526).

Almost surely, 2^12689051 is an apocalyptic number.

12689051 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689051 is an equidigital number, since it uses as much as digits as its factorization.

12689051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12689051 is about 3562.1694232588. The cubic root of 12689051 is about 233.2435883891.

The spelling of 12689051 in words is "twelve million, six hundred eighty-nine thousand, fifty-one".