55244443 has 4 divisors (see below), whose sum is σ = 55259848. Its totient is φ = 55229040.

The previous prime is 55244437. The next prime is 55244447. The reversal of 55244443 is 34444255.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55244443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55244447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823 + ... + 10543.

It is an arithmetic number, because the mean of its divisors is an integer number (13814962).

Almost surely, 2^55244443 is an apocalyptic number.

55244443 is a deficient number, since it is larger than the sum of its proper divisors (15405).

55244443 is an equidigital number, since it uses as much as digits as its factorization.

55244443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15404.

The product of its digits is 38400, while the sum is 31.

The square root of 55244443 is about 7432.6605599879. The cubic root of 55244443 is about 380.8578105090.

Adding to 55244443 its reverse (34444255), we get a palindrome (89688698).

The spelling of 55244443 in words is "fifty-five million, two hundred forty-four thousand, four hundred forty-three".