113555100 has 72 divisors (see below), whose sum is σ = 332322480. Its totient is φ = 29934080.

The previous prime is 113555059. The next prime is 113555107. The reversal of 113555100 is 1555311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113555107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24574 + ... + 28826.

It is an arithmetic number, because the mean of its divisors is an integer number (4615590).

Almost surely, 2^113555100 is an apocalyptic number.

113555100 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 113555100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166161240).

113555100 is an abundant number, since it is smaller than the sum of its proper divisors (218767380).

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

113555100 is a wasteful number, since it uses less digits than its factorization.

113555100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359 (or 4352 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 113555100 is about 10656.2235336915. The cubic root of 113555100 is about 484.2491659254.

It can be divided in two parts, 11 and 3555100, that added together give a triangular number (3555111 = T₂₆₆₆).

The spelling of 113555100 in words is "one hundred thirteen million, five hundred fifty-five thousand, one hundred".