55444438 has 8 divisors (see below), whose sum is σ = 95047632. Its totient is φ = 23761896.

The previous prime is 55444427. The next prime is 55444439. The reversal of 55444438 is 83444455.

55444438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 55444397 and 55444406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55444439) 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, 1980145 + ... + 1980172.

It is an arithmetic number, because the mean of its divisors is an integer number (11880954).

Almost surely, 2^55444438 is an apocalyptic number.

55444438 is a deficient number, since it is larger than the sum of its proper divisors (39603194).

55444438 is a wasteful number, since it uses less digits than its factorization.

55444438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960326.

The product of its digits is 153600, while the sum is 37.

The square root of 55444438 is about 7446.1022018234. The cubic root of 55444438 is about 381.3168486919.

The spelling of 55444438 in words is "fifty-five million, four hundred forty-four thousand, four hundred thirty-eight".