100001100550 has 48 divisors (see below), whose sum is σ = 200504041920. Its totient is φ = 36887696640.

The previous prime is 100001100533. The next prime is 100001100559. The reversal of 100001100550 is 55001100001.

It is a super-2 number, since 2×100001100550² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 100001100550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001100559) 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 23 ways as a sum of consecutive naturals, for example, 601314 + ... + 749386.

It is an arithmetic number, because the mean of its divisors is an integer number (4177167540).

Almost surely, 2^100001100550 is an apocalyptic number.

100001100550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100001100550 is an abundant number, since it is smaller than the sum of its proper divisors (100502941370).

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

100001100550 is a wasteful number, since it uses less digits than its factorization.

100001100550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149137 (or 149132 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

Adding to 100001100550 its reverse (55001100001), we get a palindrome (155002200551).

The spelling of 100001100550 in words is "one hundred billion, one million, one hundred thousand, five hundred fifty".