16801855 has 32 divisors (see below), whose sum is σ = 23990400. Its totient is φ = 11289600.

The previous prime is 16801853. The next prime is 16801867. The reversal of 16801855 is 55810861.

It is not a de Polignac number, because 16801855 - 2¹ = 16801853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16801855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16801853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166305 + ... + 166405.

It is an arithmetic number, because the mean of its divisors is an integer number (749700).

Almost surely, 2^16801855 is an apocalyptic number.

16801855 is a deficient number, since it is larger than the sum of its proper divisors (7188545).

16801855 is an equidigital number, since it uses as much as digits as its factorization.

16801855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 16801855 is about 4099.0065869671. The cubic root of 16801855 is about 256.1252591361.

The spelling of 16801855 in words is "sixteen million, eight hundred one thousand, eight hundred fifty-five".