55220044 has 36 divisors (see below), whose sum is σ = 106863904. Its totient is φ = 24948000.

The previous prime is 55220003. The next prime is 55220059. The reversal of 55220044 is 44002255.

55220044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55219997 and 55220024.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 130954 + ... + 131374.

Almost surely, 2^55220044 is an apocalyptic number.

It is an amenable number.

55220044 is a deficient number, since it is larger than the sum of its proper divisors (51643860).

55220044 is a wasteful number, since it uses less digits than its factorization.

55220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 55220044 is about 7431.0190418273. The cubic root of 55220044 is about 380.8017329647.

Adding to 55220044 its reverse (44002255), we get a palindrome (99222299).

The spelling of 55220044 in words is "fifty-five million, two hundred twenty thousand, forty-four".