14555561 has 2 divisors, whose sum is σ = 14555562. Its totient is φ = 14555560.

The previous prime is 14555551. The next prime is 14555581. The reversal of 14555561 is 16555541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9803161 + 4752400 = 3131^2 + 2180^2 .

It is an emirp because it is prime and its reverse (16555541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14555561 - 2¹⁸ = 14293417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14555521) 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, 7277780 + 7277781.

It is an arithmetic number, because the mean of its divisors is an integer number (7277781).

Almost surely, 2^14555561 is an apocalyptic number.

It is an amenable number.

14555561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14555561 is an equidigital number, since it uses as much as digits as its factorization.

14555561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15000, while the sum is 32.

The square root of 14555561 is about 3815.1750942781. The cubic root of 14555561 is about 244.1610119303.

The spelling of 14555561 in words is "fourteen million, five hundred fifty-five thousand, five hundred sixty-one".