16855541 has 2 divisors, whose sum is σ = 16855542. Its totient is φ = 16855540.

The previous prime is 16855529. The next prime is 16855549. The reversal of 16855541 is 14555861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14853316 + 2002225 = 3854^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 16855541 - 2¹⁴ = 16839157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16855549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8427770 + 8427771.

It is an arithmetic number, because the mean of its divisors is an integer number (8427771).

Almost surely, 2^16855541 is an apocalyptic number.

It is an amenable number.

16855541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16855541 is an equidigital number, since it uses as much as digits as its factorization.

16855541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 35.

The square root of 16855541 is about 4105.5500240528. The cubic root of 16855541 is about 256.3977632015.

The spelling of 16855541 in words is "sixteen million, eight hundred fifty-five thousand, five hundred forty-one".