14405561 has 2 divisors, whose sum is σ = 14405562. Its totient is φ = 14405560.

The previous prime is 14405557. The next prime is 14405569. The reversal of 14405561 is 16550441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12033961 + 2371600 = 3469^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 14405561 - 2² = 14405557 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14405561.

It is not a weakly prime, because it can be changed into another prime (14405569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7202780 + 7202781.

It is an arithmetic number, because the mean of its divisors is an integer number (7202781).

Almost surely, 2^14405561 is an apocalyptic number.

It is an amenable number.

14405561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14405561 is an equidigital number, since it uses as much as digits as its factorization.

14405561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 14405561 is about 3795.4658475607. The cubic root of 14405561 is about 243.3193935010.

The spelling of 14405561 in words is "fourteen million, four hundred five thousand, five hundred sixty-one".