115500681 has 16 divisors (see below), whose sum is σ = 171400320. Its totient is φ = 76870800.

The previous prime is 115500631. The next prime is 115500719. The reversal of 115500681 is 186005511.

It is not a de Polignac number, because 115500681 - 2²³ = 107112073 is a prime.

It is a super-2 number, since 2×115500681² = 26680814622927522, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115500631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14356 + ... + 20906.

It is an arithmetic number, because the mean of its divisors is an integer number (10712520).

Almost surely, 2^115500681 is an apocalyptic number.

It is an amenable number.

115500681 is a deficient number, since it is larger than the sum of its proper divisors (55899639).

115500681 is an equidigital number, since it uses as much as digits as its factorization.

115500681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213 (or 7207 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 115500681 is about 10747.1243130430. The cubic root of 115500681 is about 486.9991257976. Note that the first 3 decimals are identical.

The spelling of 115500681 in words is "one hundred fifteen million, five hundred thousand, six hundred eighty-one".