12354521 has 2 divisors, whose sum is σ = 12354522. Its totient is φ = 12354520.

The previous prime is 12354499. The next prime is 12354527. The reversal of 12354521 is 12545321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 3857296 = 2915^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 12354521 - 2⁶ = 12354457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12354527) 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, 6177260 + 6177261.

It is an arithmetic number, because the mean of its divisors is an integer number (6177261).

Almost surely, 2^12354521 is an apocalyptic number.

It is an amenable number.

12354521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12354521 is an equidigital number, since it uses as much as digits as its factorization.

12354521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 12354521 is about 3514.8998563259. The cubic root of 12354521 is about 231.1755878428.

Adding to 12354521 its reverse (12545321), we get a palindrome (24899842).

The spelling of 12354521 in words is "twelve million, three hundred fifty-four thousand, five hundred twenty-one".