14231561 has 2 divisors, whose sum is σ = 14231562. Its totient is φ = 14231560.

The previous prime is 14231543. The next prime is 14231587. The reversal of 14231561 is 16513241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13801225 + 430336 = 3715^2 + 656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14231561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14231501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7115780 + 7115781.

It is an arithmetic number, because the mean of its divisors is an integer number (7115781).

Almost surely, 2^14231561 is an apocalyptic number.

It is an amenable number.

14231561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14231561 is an equidigital number, since it uses as much as digits as its factorization.

14231561 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 14231561 is about 3772.4741218463. The cubic root of 14231561 is about 242.3357643750.

The spelling of 14231561 in words is "fourteen million, two hundred thirty-one thousand, five hundred sixty-one".