55244450044 has 144 divisors (see below), whose sum is σ = 124759958400. Its totient is φ = 21239801856.

The previous prime is 55244450039. The next prime is 55244450047. The reversal of 55244450044 is 44005444255.

It is a junction number, because it is equal to n+sod(n) for n = 55244449985 and 55244450012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55244450047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7629994 + ... + 7637230.

It is an arithmetic number, because the mean of its divisors is an integer number (866388600).

Almost surely, 2^55244450044 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 55244450044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62379979200).

55244450044 is an abundant number, since it is smaller than the sum of its proper divisors (69515508356).

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

55244450044 is a wasteful number, since it uses less digits than its factorization.

55244450044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380 (or 7371 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

Adding to 55244450044 its reverse (44005444255), we get a palindrome (99249894299).

The spelling of 55244450044 in words is "fifty-five billion, two hundred forty-four million, four hundred fifty thousand, forty-four".