55642044 has 12 divisors (see below), whose sum is σ = 129831464. Its totient is φ = 18547344.

The previous prime is 55642021. The next prime is 55642049. The reversal of 55642044 is 44024655.

55642044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55642049) 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 3 ways as a sum of consecutive naturals, for example, 2318407 + ... + 2318430.

Almost surely, 2^55642044 is an apocalyptic number.

It is an amenable number.

55642044 is an abundant number, since it is smaller than the sum of its proper divisors (74189420).

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

55642044 is a wasteful number, since it uses less digits than its factorization.

55642044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636844 (or 4636842 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 55642044 is about 7459.3594899294. The cubic root of 55642044 is about 381.7693206286.

Adding to 55642044 its reverse (44024655), we get a palindrome (99666699).

The spelling of 55642044 in words is "fifty-five million, six hundred forty-two thousand, forty-four".