14915861 has 2 divisors, whose sum is σ = 14915862. Its totient is φ = 14915860.

The previous prime is 14915839. The next prime is 14915863. The reversal of 14915861 is 16851941.

14915861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8814961 + 6100900 = 2969^2 + 2470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14915861 is a prime.

Together with 14915863, 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 (14915863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7457930 + 7457931.

It is an arithmetic number, because the mean of its divisors is an integer number (7457931).

Almost surely, 2^14915861 is an apocalyptic number.

It is an amenable number.

14915861 is a deficient number, since it is larger than the sum of its proper divisors (1).

14915861 is an equidigital number, since it uses as much as digits as its factorization.

14915861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 35.

The square root of 14915861 is about 3862.1057727618. The cubic root of 14915861 is about 246.1592211792.

The spelling of 14915861 in words is "fourteen million, nine hundred fifteen thousand, eight hundred sixty-one".