16354481 has 24 divisors (see below), whose sum is σ = 19953192. Its totient is φ = 13305600.

The previous prime is 16354451. The next prime is 16354487. The reversal of 16354481 is 18445361.

It can be written as a sum of positive squares in 4 ways, for example, as 3964081 + 12390400 = 1991^2 + 3520^2 .

It is not a de Polignac number, because 16354481 - 2¹⁰ = 16353457 is a prime.

It is a super-2 number, since 2×16354481² = 534938097558722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16354487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58061 + ... + 58341.

It is an arithmetic number, because the mean of its divisors is an integer number (831383).

Almost surely, 2^16354481 is an apocalyptic number.

16354481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16354481 is a deficient number, since it is larger than the sum of its proper divisors (3598711).

16354481 is a wasteful number, since it uses less digits than its factorization.

16354481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 342 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 16354481 is about 4044.0673832171. The cubic root of 16354481 is about 253.8315424638.

It can be divided in two parts, 1635 and 4481, that added together give a palindrome (6116).

The spelling of 16354481 in words is "sixteen million, three hundred fifty-four thousand, four hundred eighty-one".