55664444 has 12 divisors (see below), whose sum is σ = 106268568. Its totient is φ = 25302000.

The previous prime is 55664431. The next prime is 55664449. The reversal of 55664444 is 44446655.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55664398 and 55664407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55664449) 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, 632507 + ... + 632594.

It is an arithmetic number, because the mean of its divisors is an integer number (8855714).

Almost surely, 2^55664444 is an apocalyptic number.

It is an amenable number.

55664444 is a deficient number, since it is larger than the sum of its proper divisors (50604124).

55664444 is a wasteful number, since it uses less digits than its factorization.

55664444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265116 (or 1265114 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 55664444 is about 7460.8608082446. The cubic root of 55664444 is about 381.8205437977.

The spelling of 55664444 in words is "fifty-five million, six hundred sixty-four thousand, four hundred forty-four".