16855427 has 2 divisors, whose sum is σ = 16855428. Its totient is φ = 16855426.

The previous prime is 16855417. The next prime is 16855457. The reversal of 16855427 is 72455861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16855427 - 2⁸ = 16855171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16855417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8427713 + 8427714.

It is an arithmetic number, because the mean of its divisors is an integer number (8427714).

Almost surely, 2^16855427 is an apocalyptic number.

16855427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16855427 is an equidigital number, since it uses as much as digits as its factorization.

16855427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 16855427 is about 4105.5361403841. The cubic root of 16855427 is about 256.3971851638.

The spelling of 16855427 in words is "sixteen million, eight hundred fifty-five thousand, four hundred twenty-seven".