55643244 has 24 divisors (see below), whose sum is σ = 137472048. Its totient is φ = 17456640.

The previous prime is 55643243. The next prime is 55643293. The reversal of 55643244 is 44234655.

It is not an unprimeable number, because it can be changed into a prime (55643243) 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 7 ways as a sum of consecutive naturals, for example, 136177 + ... + 136584.

It is an arithmetic number, because the mean of its divisors is an integer number (5728002).

Almost surely, 2^55643244 is an apocalyptic number.

It is an amenable number.

55643244 is an abundant number, since it is smaller than the sum of its proper divisors (81828804).

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

55643244 is a wasteful number, since it uses less digits than its factorization.

55643244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272785 (or 272783 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 55643244 is about 7459.4399253563. The cubic root of 55643244 is about 381.7720650754.

Adding to 55643244 its reverse (44234655), we get a palindrome (99877899).

The spelling of 55643244 in words is "fifty-five million, six hundred forty-three thousand, two hundred forty-four".