55044636 has 24 divisors (see below), whose sum is σ = 128714880. Its totient is φ = 18308592.

The previous prime is 55044599. The next prime is 55044637. The reversal of 55044636 is 63644055.

It is a junction number, because it is equal to n+sod(n) for n = 55044597 and 55044606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55044637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 10553.

It is an arithmetic number, because the mean of its divisors is an integer number (5363120).

Almost surely, 2^55044636 is an apocalyptic number.

It is an amenable number.

55044636 is an abundant number, since it is smaller than the sum of its proper divisors (73670244).

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

55044636 is a wasteful number, since it uses less digits than its factorization.

55044636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9913 (or 9911 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 55044636 is about 7419.2072352779. The cubic root of 55044636 is about 380.3980961890.

The spelling of 55044636 in words is "fifty-five million, forty-four thousand, six hundred thirty-six".