16454545 has 12 divisors (see below), whose sum is σ = 20644596. Its totient is φ = 12589280.

The previous prime is 16454497. The next prime is 16454561. The reversal of 16454545 is 54545461.

It can be written as a sum of positive squares in 2 ways, for example, as 2742336 + 13712209 = 1656^2 + 3703^2 .

It is not a de Polignac number, because 16454545 - 2⁹ = 16454033 is a prime.

It is a Duffinian number.

16454545 is a modest number, since divided by 4545 gives 1645 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 16454545.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 466 + ... + 5755.

It is an arithmetic number, because the mean of its divisors is an integer number (1720383).

Almost surely, 2^16454545 is an apocalyptic number.

It is an amenable number.

16454545 is a deficient number, since it is larger than the sum of its proper divisors (4190051).

16454545 is an equidigital number, since it uses as much as digits as its factorization.

16454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6272 (or 6249 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 16454545 is about 4056.4202198490. The cubic root of 16454545 is about 254.3481750454.

It can be divided in two parts, 1 and 6454545, that added together give a palindrome (6454546).

The spelling of 16454545 in words is "sixteen million, four hundred fifty-four thousand, five hundred forty-five".