100385055 has 32 divisors (see below), whose sum is σ = 178960320. Its totient is φ = 53389440.

The previous prime is 100385029. The next prime is 100385057. The reversal of 100385055 is 550583001.

It is not a de Polignac number, because 100385055 - 2⁷ = 100384927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100385057) 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 31 ways as a sum of consecutive naturals, for example, 61429 + ... + 63041.

It is an arithmetic number, because the mean of its divisors is an integer number (5592510).

Almost surely, 2^100385055 is an apocalyptic number.

100385055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100385055 is a deficient number, since it is larger than the sum of its proper divisors (78575265).

100385055 is a wasteful number, since it uses less digits than its factorization.

100385055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2082 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 100385055 is about 10019.2342521772. The cubic root of 100385055 is about 464.7538759933.

The spelling of 100385055 in words is "one hundred million, three hundred eighty-five thousand, fifty-five".