220445441 has 8 divisors (see below), whose sum is σ = 222902784. Its totient is φ = 217994400.

The previous prime is 220445437. The next prime is 220445447. The reversal of 220445441 is 144544022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220445441 - 2² = 220445437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220445441.

It is not an unprimeable number, because it can be changed into a prime (220445447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 112016 + ... + 113966.

It is an arithmetic number, because the mean of its divisors is an integer number (27862848).

Almost surely, 2^220445441 is an apocalyptic number.

It is an amenable number.

220445441 is a deficient number, since it is larger than the sum of its proper divisors (2457343).

220445441 is a wasteful number, since it uses less digits than its factorization.

220445441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 220445441 is about 14847.4051941745. The cubic root of 220445441 is about 604.0882297686.

Adding to 220445441 its reverse (144544022), we get a palindrome (364989463).

The spelling of 220445441 in words is "two hundred twenty million, four hundred forty-five thousand, four hundred forty-one".