12530081 has 2 divisors, whose sum is σ = 12530082. Its totient is φ = 12530080.

The previous prime is 12530069. The next prime is 12530083. The reversal of 12530081 is 18003521.

12530081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 33856 = 3535^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 12530081 - 2⁶ = 12530017 is a prime.

It is a super-2 number, since 2×12530081² = 314005859733122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 12530083, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12530083) 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, 6265040 + 6265041.

It is an arithmetic number, because the mean of its divisors is an integer number (6265041).

Almost surely, 2^12530081 is an apocalyptic number.

It is an amenable number.

12530081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530081 is an equidigital number, since it uses as much as digits as its factorization.

12530081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12530081 is about 3539.7854454755. The cubic root of 12530081 is about 232.2654573909.

The spelling of 12530081 in words is "twelve million, five hundred thirty thousand, eighty-one".