14155861 has 2 divisors, whose sum is σ = 14155862. Its totient is φ = 14155860.

The previous prime is 14155859. The next prime is 14155873. The reversal of 14155861 is 16855141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13830961 + 324900 = 3719^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 14155861 - 2¹ = 14155859 is a prime.

Together with 14155859, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14155891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7077930 + 7077931.

It is an arithmetic number, because the mean of its divisors is an integer number (7077931).

Almost surely, 2^14155861 is an apocalyptic number.

It is an amenable number.

14155861 is a deficient number, since it is larger than the sum of its proper divisors (1).

14155861 is an equidigital number, since it uses as much as digits as its factorization.

14155861 is an evil number, because the sum of its binary digits is even.

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

The square root of 14155861 is about 3762.4275408305. The cubic root of 14155861 is about 241.9053257607.

The spelling of 14155861 in words is "fourteen million, one hundred fifty-five thousand, eight hundred sixty-one".