55216044 has 72 divisors (see below), whose sum is σ = 151656960. Its totient is φ = 16837632.

The previous prime is 55216043. The next prime is 55216067. The reversal of 55216044 is 44061255.

55216044 is a `hidden beast` number, since 5 + 52 + 1 + 604 + 4 = 666.

55216044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55215999 and 55216017.

It is not an unprimeable number, because it can be changed into a prime (55216043) 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 23 ways as a sum of consecutive naturals, for example, 58972 + ... + 59900.

Almost surely, 2^55216044 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 55216044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75828480).

55216044 is an abundant number, since it is smaller than the sum of its proper divisors (96440916).

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

55216044 is a wasteful number, since it uses less digits than its factorization.

55216044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55216044 is about 7430.7498948626. The cubic root of 55216044 is about 380.7925379720.

Adding to 55216044 its reverse (44061255), we get a palindrome (99277299).

The spelling of 55216044 in words is "fifty-five million, two hundred sixteen thousand, forty-four".