55666844 has 6 divisors (see below), whose sum is σ = 97416984. Its totient is φ = 27833420.

The previous prime is 55666841. The next prime is 55666901. The reversal of 55666844 is 44866655.

It is a junction number, because it is equal to n+sod(n) for n = 55666795 and 55666804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55666841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6958352 + ... + 6958359.

It is an arithmetic number, because the mean of its divisors is an integer number (16236164).

Almost surely, 2^55666844 is an apocalyptic number.

It is an amenable number.

55666844 is a deficient number, since it is larger than the sum of its proper divisors (41750140).

55666844 is a wasteful number, since it uses less digits than its factorization.

55666844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13916715 (or 13916713 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 55666844 is about 7461.0216458606. The cubic root of 55666844 is about 381.8260311792.

The spelling of 55666844 in words is "fifty-five million, six hundred sixty-six thousand, eight hundred forty-four".