16855855 has 8 divisors (see below), whose sum is σ = 20608992. Its totient is φ = 13230048.

The previous prime is 16855829. The next prime is 16855877. The reversal of 16855855 is 55855861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16855855 - 2¹⁵ = 16823087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 31539 + ... + 32068.

It is an arithmetic number, because the mean of its divisors is an integer number (2576124).

Almost surely, 2^16855855 is an apocalyptic number.

16855855 is a deficient number, since it is larger than the sum of its proper divisors (3753137).

16855855 is an equidigital number, since it uses as much as digits as its factorization.

16855855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63665.

The product of its digits is 240000, while the sum is 43.

The square root of 16855855 is about 4105.5882647923. The cubic root of 16855855 is about 256.3993553267.

The spelling of 16855855 in words is "sixteen million, eight hundred fifty-five thousand, eight hundred fifty-five".