115540371 has 32 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 75040992.

The previous prime is 115540367. The next prime is 115540393. The reversal of 115540371 is 173045511.

115540371 is a `hidden beast` number, since 115 + 540 + 3 + 7 + 1 = 666.

It is not a de Polignac number, because 115540371 - 2² = 115540367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115540331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376200 + ... + 376506.

It is an arithmetic number, because the mean of its divisors is an integer number (5488560).

Almost surely, 2^115540371 is an apocalyptic number.

115540371 is a deficient number, since it is larger than the sum of its proper divisors (60093549).

115540371 is a wasteful number, since it uses less digits than its factorization.

115540371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 115540371 is about 10748.9706949084. The cubic root of 115540371 is about 487.0549026165.

Adding to 115540371 its reverse (173045511), we get a palindrome (288585882).

The spelling of 115540371 in words is "one hundred fifteen million, five hundred forty thousand, three hundred seventy-one".