4541144221 has 4 divisors (see below), whose sum is σ = 4581331452. Its totient is φ = 4500956992.

The previous prime is 4541144203. The next prime is 4541144263. The reversal of 4541144221 is 1224411454.

It is a happy number.

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 1851580900 + 2689563321 = 43030^2 + 51861^2 .

It is a cyclic number.

It is not a de Polignac number, because 4541144221 - 2⁵ = 4541144189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4541144221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4541144021) 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, 20093446 + ... + 20093671.

It is an arithmetic number, because the mean of its divisors is an integer number (1145332863).

Almost surely, 2^4541144221 is an apocalyptic number.

It is an amenable number.

4541144221 is a deficient number, since it is larger than the sum of its proper divisors (40187231).

4541144221 is a wasteful number, since it uses less digits than its factorization.

4541144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40187230.

The product of its digits is 5120, while the sum is 28.

The square root of 4541144221 is about 67388.0124428670. The cubic root of 4541144221 is about 1655.9800417140.

Adding to 4541144221 its reverse (1224411454), we get a palindrome (5765555675).

The spelling of 4541144221 in words is "four billion, five hundred forty-one million, one hundred forty-four thousand, two hundred twenty-one".