14321561 has 2 divisors, whose sum is σ = 14321562. Its totient is φ = 14321560.

The previous prime is 14321551. The next prime is 14321581. The reversal of 14321561 is 16512341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14295961 + 25600 = 3781^2 + 160^2 .

It is an emirp because it is prime and its reverse (16512341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14321561 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 (14321521) 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, 7160780 + 7160781.

It is an arithmetic number, because the mean of its divisors is an integer number (7160781).

Almost surely, 2^14321561 is an apocalyptic number.

It is an amenable number.

14321561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14321561 is an equidigital number, since it uses as much as digits as its factorization.

14321561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 14321561 is about 3784.3838335983. The cubic root of 14321561 is about 242.8455328607.

The spelling of 14321561 in words is "fourteen million, three hundred twenty-one thousand, five hundred sixty-one".