16641241 has 4 divisors (see below), whose sum is σ = 16659252. Its totient is φ = 16623232.

The previous prime is 16641239. The next prime is 16641263. The reversal of 16641241 is 14214661.

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 10265616 + 6375625 = 3204^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 16641241 - 2¹ = 16641239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16641211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7540 + ... + 9493.

It is an arithmetic number, because the mean of its divisors is an integer number (4164813).

It is a 924-hyperperfect number.

Almost surely, 2^16641241 is an apocalyptic number.

It is an amenable number.

16641241 is a deficient number, since it is larger than the sum of its proper divisors (18011).

16641241 is an equidigital number, since it uses as much as digits as its factorization.

16641241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18010.

The product of its digits is 1152, while the sum is 25.

The square root of 16641241 is about 4079.3677206155. The cubic root of 16641241 is about 255.3065185016.

The spelling of 16641241 in words is "sixteen million, six hundred forty-one thousand, two hundred forty-one".