16544441 has 4 divisors (see below), whose sum is σ = 16617552. Its totient is φ = 16471332.

The previous prime is 16544431. The next prime is 16544453. The reversal of 16544441 is 14444561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14444561 = 97 ⋅148913.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16544441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16544401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36215 + ... + 36668.

It is an arithmetic number, because the mean of its divisors is an integer number (4154388).

Almost surely, 2^16544441 is an apocalyptic number.

It is an amenable number.

16544441 is a deficient number, since it is larger than the sum of its proper divisors (73111).

16544441 is an equidigital number, since it uses as much as digits as its factorization.

16544441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73110.

The product of its digits is 7680, while the sum is 29.

The square root of 16544441 is about 4067.4858327965. The cubic root of 16544441 is about 254.8105269423.

The spelling of 16544441 in words is "sixteen million, five hundred forty-four thousand, four hundred forty-one".