115553440 has 48 divisors (see below), whose sum is σ = 287370720. Its totient is φ = 43787520.

The previous prime is 115553353. The next prime is 115553441. The reversal of 115553440 is 44355511.

It is a junction number, because it is equal to n+sod(n) for n = 115553399 and 115553408.

It is not an unprimeable number, because it can be changed into a prime (115553441) 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, 15966 + ... + 22045.

It is an arithmetic number, because the mean of its divisors is an integer number (5986890).

Almost surely, 2^115553440 is an apocalyptic number.

115553440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115553440 is an abundant number, since it is smaller than the sum of its proper divisors (171817280).

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

115553440 is a wasteful number, since it uses less digits than its factorization.

115553440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38045 (or 38037 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 115553440 is about 10749.5785963916. The cubic root of 115553440 is about 487.0732658387.

The spelling of 115553440 in words is "one hundred fifteen million, five hundred fifty-three thousand, four hundred forty".