14159561 has 4 divisors (see below), whose sum is σ = 15248772. Its totient is φ = 13070352.

The previous prime is 14159557. The next prime is 14159573. The reversal of 14159561 is 16595141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16595141 = 109 ⋅152249.

It can be written as a sum of positive squares in 2 ways, for example, as 1485961 + 12673600 = 1219^2 + 3560^2 .

It is a cyclic number.

It is not a de Polignac number, because 14159561 - 2² = 14159557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14159501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544586 + ... + 544611.

It is an arithmetic number, because the mean of its divisors is an integer number (3812193).

Almost surely, 2^14159561 is an apocalyptic number.

It is an amenable number.

14159561 is a deficient number, since it is larger than the sum of its proper divisors (1089211).

14159561 is a wasteful number, since it uses less digits than its factorization.

14159561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089210.

The product of its digits is 5400, while the sum is 32.

The square root of 14159561 is about 3762.9192125264. The cubic root of 14159561 is about 241.9263999937.

The spelling of 14159561 in words is "fourteen million, one hundred fifty-nine thousand, five hundred sixty-one".