55666744 has 24 divisors (see below), whose sum is σ = 121416840. Its totient is φ = 23857008.

The previous prime is 55666727. The next prime is 55666757. The reversal of 55666744 is 44766655.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55666744.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70612 + ... + 71395.

It is an arithmetic number, because the mean of its divisors is an integer number (5059035).

Almost surely, 2^55666744 is an apocalyptic number.

It is an amenable number.

55666744 is an abundant number, since it is smaller than the sum of its proper divisors (65750096).

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

55666744 is a wasteful number, since it uses less digits than its factorization.

55666744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142027 (or 142016 counting only the distinct ones).

The product of its digits is 604800, while the sum is 43.

The square root of 55666744 is about 7461.0149443625. The cubic root of 55666744 is about 381.8258025415.

The spelling of 55666744 in words is "fifty-five million, six hundred sixty-six thousand, seven hundred forty-four".