55244321 has 8 divisors (see below), whose sum is σ = 62887104. Its totient is φ = 48038320.

The previous prime is 55244281. The next prime is 55244323. The reversal of 55244321 is 12344255.

It is a happy number.

55244321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55244321 - 2¹⁴ = 55227937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55244323) 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, 108926 + ... + 109431.

It is an arithmetic number, because the mean of its divisors is an integer number (7860888).

Almost surely, 2^55244321 is an apocalyptic number.

It is an amenable number.

55244321 is a deficient number, since it is larger than the sum of its proper divisors (7642783).

55244321 is a wasteful number, since it uses less digits than its factorization.

55244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218391.

The product of its digits is 4800, while the sum is 26.

The square root of 55244321 is about 7432.6523529626. The cubic root of 55244321 is about 380.8575301508.

Adding to 55244321 its reverse (12344255), we get a palindrome (67588576).

The spelling of 55244321 in words is "fifty-five million, two hundred forty-four thousand, three hundred twenty-one".