55319866 has 8 divisors (see below), whose sum is σ = 94834080. Its totient is φ = 23708508.

The previous prime is 55319851. The next prime is 55319879. The reversal of 55319866 is 66891355.

55319866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 1975696 + ... + 1975723.

It is an arithmetic number, because the mean of its divisors is an integer number (11854260).

Almost surely, 2^55319866 is an apocalyptic number.

55319866 is a deficient number, since it is larger than the sum of its proper divisors (39514214).

55319866 is a wasteful number, since it uses less digits than its factorization.

55319866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951428.

The product of its digits is 194400, while the sum is 43.

The square root of 55319866 is about 7437.7325845986. The cubic root of 55319866 is about 381.0310549382.

The spelling of 55319866 in words is "fifty-five million, three hundred nineteen thousand, eight hundred sixty-six".