16854481 has 18 divisors (see below), whose sum is σ = 20355270. Its totient is φ = 13914432.

The previous prime is 16854479. The next prime is 16854491. The reversal of 16854481 is 18445861.

It can be written as a sum of positive squares in 3 ways, for example, as 6350400 + 10504081 = 2520^2 + 3241^2 .

It is not a de Polignac number, because 16854481 - 2¹ = 16854479 is a prime.

It is a super-2 number, since 2×16854481² = 568147059558722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16854481.

It is not an unprimeable number, because it can be changed into a prime (16854401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41005 + ... + 41413.

Almost surely, 2^16854481 is an apocalyptic number.

It is an amenable number.

16854481 is a deficient number, since it is larger than the sum of its proper divisors (3500789).

16854481 is an equidigital number, since it uses as much as digits as its factorization.

16854481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 445 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 16854481 is about 4105.4209284798. The cubic root of 16854481 is about 256.3923883651.

The spelling of 16854481 in words is "sixteen million, eight hundred fifty-four thousand, four hundred eighty-one".