55844544 has 112 divisors (see below), whose sum is σ = 173581568. Its totient is φ = 15510528.

The previous prime is 55844543. The next prime is 55844603. The reversal of 55844544 is 44544855.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×55844544² = 6237226189135872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55844543) 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, 49167 + ... + 50289.

Almost surely, 2^55844544 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 55844544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86790784).

55844544 is an abundant number, since it is smaller than the sum of its proper divisors (117737024).

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

55844544 is a wasteful number, since it uses less digits than its factorization.

55844544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1172 counting only the distinct ones).

The product of its digits is 256000, while the sum is 39.

The square root of 55844544 is about 7472.9207141519. The cubic root of 55844544 is about 382.2318886645.

The spelling of 55844544 in words is "fifty-five million, eight hundred forty-four thousand, five hundred forty-four".