16516441 has 4 divisors (see below), whose sum is σ = 16560400. Its totient is φ = 16472484.

The previous prime is 16516439. The next prime is 16516471. The reversal of 16516441 is 14461561.

16516441 is nontrivially palindromic in base 15.

16516441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 16516441 - 2¹ = 16516439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16516471) 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, 21411 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (4140100).

Almost surely, 2^16516441 is an apocalyptic number.

It is an amenable number.

16516441 is a deficient number, since it is larger than the sum of its proper divisors (43959).

16516441 is an equidigital number, since it uses as much as digits as its factorization.

16516441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43958.

The product of its digits is 2880, while the sum is 28.

The square root of 16516441 is about 4064.0424456445. The cubic root of 16516441 is about 254.6666976950. Note that the first 4 decimals are identical.

The spelling of 16516441 in words is "sixteen million, five hundred sixteen thousand, four hundred forty-one".