388750055 has 16 divisors (see below), whose sum is σ = 471580704. Its totient is φ = 307632000.

The previous prime is 388750049. The next prime is 388750091. The reversal of 388750055 is 550057883.

It is not a de Polignac number, because 388750055 - 2²⁶ = 321641191 is a prime.

It is a super-2 number, since 2×388750055² = 302253210525006050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388749994 and 388750021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196049 + ... + 198021.

It is an arithmetic number, because the mean of its divisors is an integer number (29473794).

Almost surely, 2^388750055 is an apocalyptic number.

388750055 is a deficient number, since it is larger than the sum of its proper divisors (82830649).

388750055 is a wasteful number, since it uses less digits than its factorization.

388750055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 388750055 is about 19716.7455478839. The cubic root of 388750055 is about 729.8329854989.

The spelling of 388750055 in words is "three hundred eighty-eight million, seven hundred fifty thousand, fifty-five".