100381550 has 12 divisors (see below), whose sum is σ = 186709776. Its totient is φ = 40152600.

The previous prime is 100381531. The next prime is 100381553. The reversal of 100381550 is 55183001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100381553) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1003766 + ... + 1003865.

It is an arithmetic number, because the mean of its divisors is an integer number (15559148).

Almost surely, 2^100381550 is an apocalyptic number.

100381550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100381550 is a deficient number, since it is larger than the sum of its proper divisors (86328226).

100381550 is a wasteful number, since it uses less digits than its factorization.

100381550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007643 (or 2007638 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 100381550 is about 10019.0593370835. The cubic root of 100381550 is about 464.7484668837.

The spelling of 100381550 in words is "one hundred million, three hundred eighty-one thousand, five hundred fifty".