4845221 has 8 divisors (see below), whose sum is σ = 5154840. Its totient is φ = 4538368.

The previous prime is 4845199. The next prime is 4845241. The reversal of 4845221 is 1225484.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1288225 + 3556996 = 1135^2 + 1886^2 .

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 4845221 - 2²² = 650917 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 (4845241) 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, 3815 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (644355).

Almost surely, 2^4845221 is an apocalyptic number.

It is an amenable number.

4845221 is a deficient number, since it is larger than the sum of its proper divisors (309619).

4845221 is a wasteful number, since it uses less digits than its factorization.

4845221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383.

The product of its digits is 2560, while the sum is 26.

The square root of 4845221 is about 2201.1862710820. The cubic root of 4845221 is about 169.2146124488.

The spelling of 4845221 in words is "four million, eight hundred forty-five thousand, two hundred twenty-one".