55444424 has 64 divisors (see below), whose sum is σ = 122774400. Its totient is φ = 22984704.

The previous prime is 55444387. The next prime is 55444427. The reversal of 55444424 is 42444455.

It is not an unprimeable number, because it can be changed into a prime (55444427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320402 + ... + 320574.

It is an arithmetic number, because the mean of its divisors is an integer number (1918350).

Almost surely, 2^55444424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55444424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61387200).

55444424 is an abundant number, since it is smaller than the sum of its proper divisors (67329976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55444424 is a wasteful number, since it uses less digits than its factorization.

55444424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 338 counting only the distinct ones).

The product of its digits is 51200, while the sum is 32.

The square root of 55444424 is about 7446.1012617342. The cubic root of 55444424 is about 381.3168165971.

Adding to 55444424 its reverse (42444455), we get a palindrome (97888879).

The spelling of 55444424 in words is "fifty-five million, four hundred forty-four thousand, four hundred twenty-four".