12526561 has 2 divisors, whose sum is σ = 12526562. Its totient is φ = 12526560.

The previous prime is 12526537. The next prime is 12526571. The reversal of 12526561 is 16562521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 136161 = 3520^2 + 369^2 .

It is an emirp because it is prime and its reverse (16562521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12526561 - 2⁹ = 12526049 is a prime.

It is not a weakly prime, because it can be changed into another prime (12526571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6263280 + 6263281.

It is an arithmetic number, because the mean of its divisors is an integer number (6263281).

Almost surely, 2^12526561 is an apocalyptic number.

It is an amenable number.

12526561 is a deficient number, since it is larger than the sum of its proper divisors (1).

12526561 is an equidigital number, since it uses as much as digits as its factorization.

12526561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 12526561 is about 3539.2882052752. The cubic root of 12526561 is about 232.2437057097.

The spelling of 12526561 in words is "twelve million, five hundred twenty-six thousand, five hundred sixty-one".