388500055 has 8 divisors (see below), whose sum is σ = 477042192. Its totient is φ = 303571968.

The previous prime is 388500023. The next prime is 388500109. The reversal of 388500055 is 550005883.

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

It is a cyclic number.

It is not a de Polignac number, because 388500055 - 2⁵ = 388500023 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 903274 + ... + 903703.

It is an arithmetic number, because the mean of its divisors is an integer number (59630274).

Almost surely, 2^388500055 is an apocalyptic number.

388500055 is a deficient number, since it is larger than the sum of its proper divisors (88542137).

388500055 is a wasteful number, since it uses less digits than its factorization.

388500055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807025.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 388500055 is about 19710.4047396293. The cubic root of 388500055 is about 729.6765033153.

The spelling of 388500055 in words is "three hundred eighty-eight million, five hundred thousand, fifty-five".