14145881 has 4 divisors (see below), whose sum is σ = 14633700. Its totient is φ = 13658064.

The previous prime is 14145871. The next prime is 14145893. The reversal of 14145881 is 18854141.

14145881 = 2659² + 2660².

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7075600 + 7070281 = 2660^2 + 2659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14145881 is a prime.

It is a super-2 number, since 2×14145881² = 400211898532322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14145841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243866 + ... + 243923.

It is an arithmetic number, because the mean of its divisors is an integer number (3658425).

Almost surely, 2^14145881 is an apocalyptic number.

14145881 is the 2660-th centered square number.

It is an amenable number.

14145881 is a deficient number, since it is larger than the sum of its proper divisors (487819).

14145881 is an equidigital number, since it uses as much as digits as its factorization.

14145881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487818.

The product of its digits is 5120, while the sum is 32.

The square root of 14145881 is about 3761.1010356011. The cubic root of 14145881 is about 241.8484639723.

The spelling of 14145881 in words is "fourteen million, one hundred forty-five thousand, eight hundred eighty-one".