385055556 has 24 divisors (see below), whose sum is σ = 898786560. Its totient is φ = 128305632.

The previous prime is 385055551. The next prime is 385055597. The reversal of 385055556 is 655550583.

It is not an unprimeable number, because it can be changed into a prime (385055551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52210 + ... + 59126.

It is an arithmetic number, because the mean of its divisors is an integer number (37449440).

Almost surely, 2^385055556 is an apocalyptic number.

It is an amenable number.

385055556 is an abundant number, since it is smaller than the sum of its proper divisors (513731004).

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

385055556 is a wasteful number, since it uses less digits than its factorization.

385055556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563 (or 11561 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The square root of 385055556 is about 19622.8325172489. The cubic root of 385055556 is about 727.5136252334.

The spelling of 385055556 in words is "three hundred eighty-five million, fifty-five thousand, five hundred fifty-six".