115555040 has 48 divisors (see below), whose sum is σ = 277648560. Its totient is φ = 45434880.

The previous prime is 115555039. The next prime is 115555049. The reversal of 115555040 is 40555511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115555049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3320 + ... + 15560.

It is an arithmetic number, because the mean of its divisors is an integer number (5784345).

Almost surely, 2^115555040 is an apocalyptic number.

115555040 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 115555040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138824280).

115555040 is an abundant number, since it is smaller than the sum of its proper divisors (162093520).

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

115555040 is a wasteful number, since it uses less digits than its factorization.

115555040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12315 (or 12307 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 115555040 is about 10749.6530176560. The cubic root of 115555040 is about 487.0755139000.

The spelling of 115555040 in words is "one hundred fifteen million, five hundred fifty-five thousand, forty".