12656051 has 2 divisors, whose sum is σ = 12656052. Its totient is φ = 12656050.

The previous prime is 12656047. The next prime is 12656053. The reversal of 12656051 is 15065621.

12656051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12656051 - 2² = 12656047 is a prime.

It is a Sophie Germain prime.

Together with 12656053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12656051.

It is not a weakly prime, because it can be changed into another prime (12656053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328025 + 6328026.

It is an arithmetic number, because the mean of its divisors is an integer number (6328026).

Almost surely, 2^12656051 is an apocalyptic number.

12656051 is a deficient number, since it is larger than the sum of its proper divisors (1).

12656051 is an equidigital number, since it uses as much as digits as its factorization.

12656051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12656051 is about 3557.5343989904. The cubic root of 12656051 is about 233.0412165292.

The spelling of 12656051 in words is "twelve million, six hundred fifty-six thousand, fifty-one".