55575644 has 12 divisors (see below), whose sum is σ = 97482000. Its totient is φ = 27723648.

The previous prime is 55575643. The next prime is 55575649. The reversal of 55575644 is 44657555.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55575643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14069 + ... + 17580.

It is an arithmetic number, because the mean of its divisors is an integer number (8123500).

Almost surely, 2^55575644 is an apocalyptic number.

It is an amenable number.

55575644 is a deficient number, since it is larger than the sum of its proper divisors (41906356).

55575644 is a wasteful number, since it uses less digits than its factorization.

55575644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32092 (or 32090 counting only the distinct ones).

The product of its digits is 420000, while the sum is 41.

The square root of 55575644 is about 7454.9073770235. The cubic root of 55575644 is about 381.6173996992.

The spelling of 55575644 in words is "fifty-five million, five hundred seventy-five thousand, six hundred forty-four".