16320541 has 4 divisors (see below), whose sum is σ = 16488892. Its totient is φ = 16152192.

The previous prime is 16320529. The next prime is 16320569. The reversal of 16320541 is 14502361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5784025 + 10536516 = 2405^2 + 3246^2 .

It is a cyclic number.

It is not a de Polignac number, because 16320541 - 2⁷ = 16320413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16320571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84030 + ... + 84223.

It is an arithmetic number, because the mean of its divisors is an integer number (4122223).

Almost surely, 2^16320541 is an apocalyptic number.

It is an amenable number.

16320541 is a deficient number, since it is larger than the sum of its proper divisors (168351).

16320541 is an equidigital number, since it uses as much as digits as its factorization.

16320541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168350.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16320541 is about 4039.8689335175. The cubic root of 16320541 is about 253.6558310089.

It can be divided in two parts, 16320 and 541, that added together give a palindrome (16861).

The spelling of 16320541 in words is "sixteen million, three hundred twenty thousand, five hundred forty-one".