109055100 has 144 divisors (see below), whose sum is σ = 393474816. Its totient is φ = 22656000.

The previous prime is 109055083. The next prime is 109055131. The reversal of 109055100 is 1550901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20740 + ... + 25460.

It is an arithmetic number, because the mean of its divisors is an integer number (2732464).

Almost surely, 2^109055100 is an apocalyptic number.

109055100 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 109055100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196737408).

109055100 is an abundant number, since it is smaller than the sum of its proper divisors (284419716).

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

109055100 is a wasteful number, since it uses less digits than its factorization.

109055100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756 (or 4749 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 109055100 is about 10442.9449869278. The cubic root of 109055100 is about 477.7660953016.

The spelling of 109055100 in words is "one hundred nine million, fifty-five thousand, one hundred".