115501140 has 120 divisors (see below), whose sum is σ = 367123680. Its totient is φ = 30393792.

The previous prime is 115501123. The next prime is 115501153. The reversal of 115501140 is 41105511.

It is a happy number.

115501140 is a `hidden beast` number, since 1 + 1 + 550 + 114 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 134031 + ... + 134889.

It is an arithmetic number, because the mean of its divisors is an integer number (3059364).

Almost surely, 2^115501140 is an apocalyptic number.

115501140 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 115501140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183561840).

115501140 is an abundant number, since it is smaller than the sum of its proper divisors (251622540).

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

115501140 is a wasteful number, since it uses less digits than its factorization.

115501140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 115501140 is about 10747.1456675715. The cubic root of 115501140 is about 486.9997709087. Note that the first 3 decimals are identical.

Adding to 115501140 its reverse (41105511), we get a palindrome (156606651).

The spelling of 115501140 in words is "one hundred fifteen million, five hundred one thousand, one hundred forty".