14155681 has 2 divisors, whose sum is σ = 14155682. Its totient is φ = 14155680.

The previous prime is 14155667. The next prime is 14155697. The reversal of 14155681 is 18655141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14130081 + 25600 = 3759^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 14155681 - 2⁷ = 14155553 is a prime.

It is a super-2 number, since 2×14155681² = 400766609147522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14155651) 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, 7077840 + 7077841.

It is an arithmetic number, because the mean of its divisors is an integer number (7077841).

Almost surely, 2^14155681 is an apocalyptic number.

It is an amenable number.

14155681 is a deficient number, since it is larger than the sum of its proper divisors (1).

14155681 is an equidigital number, since it uses as much as digits as its factorization.

14155681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The square root of 14155681 is about 3762.4036200280. The cubic root of 14155681 is about 241.9043004341.

The spelling of 14155681 in words is "fourteen million, one hundred fifty-five thousand, six hundred eighty-one".