55271644 has 12 divisors (see below), whose sum is σ = 97683768. Its totient is φ = 27362000.

The previous prime is 55271621. The next prime is 55271647. The reversal of 55271644 is 44617255.

55271644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55271647) 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, 68002 + ... + 68809.

It is an arithmetic number, because the mean of its divisors is an integer number (8140314).

Almost surely, 2^55271644 is an apocalyptic number.

It is an amenable number.

55271644 is a deficient number, since it is larger than the sum of its proper divisors (42412124).

55271644 is a wasteful number, since it uses less digits than its factorization.

55271644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136916 (or 136914 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 55271644 is about 7434.4901640933. The cubic root of 55271644 is about 380.9203085807.

Adding to 55271644 its reverse (44617255), we get a palindrome (99888899).

The spelling of 55271644 in words is "fifty-five million, two hundred seventy-one thousand, six hundred forty-four".