109105556 has 48 divisors (see below), whose sum is σ = 224246400. Its totient is φ = 46428480.

The previous prime is 109105483. The next prime is 109105561. The reversal of 109105556 is 655501901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385391 + ... + 385673.

It is an arithmetic number, because the mean of its divisors is an integer number (4671800).

Almost surely, 2^109105556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109105556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112123200).

109105556 is an abundant number, since it is smaller than the sum of its proper divisors (115140844).

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

109105556 is a wasteful number, since it uses less digits than its factorization.

109105556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 109105556 is about 10445.3605011986. The cubic root of 109105556 is about 477.8397658570.

The spelling of 109105556 in words is "one hundred nine million, one hundred five thousand, five hundred fifty-six".