105555500 has 48 divisors (see below), whose sum is σ = 232805664. Its totient is φ = 41806400.

The previous prime is 105555481. The next prime is 105555509. The reversal of 105555500 is 5555501.

It is a super-2 number, since 2×105555500² = 22283927160500000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105555500.

It is not an unprimeable number, because it can be changed into a prime (105555509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52514 + ... + 54486.

It is an arithmetic number, because the mean of its divisors is an integer number (4850118).

Almost surely, 2^105555500 is an apocalyptic number.

105555500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105555500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116402832).

105555500 is an abundant number, since it is smaller than the sum of its proper divisors (127250164).

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

105555500 is a wasteful number, since it uses less digits than its factorization.

105555500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 105555500 is about 10274.0206345909. The cubic root of 105555500 is about 472.5998967603.

Subtracting from 105555500 its reverse (5555501), we obtain a palindrome (99999999).

The spelling of 105555500 in words is "one hundred five million, five hundred fifty-five thousand, five hundred".