115500709 has 4 divisors (see below), whose sum is σ = 118186816. Its totient is φ = 112814604.

The previous prime is 115500631. The next prime is 115500719. The reversal of 115500709 is 907005511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 907005511 = 12197 ⋅74363.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115500709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115500719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342989 + ... + 1343074.

It is an arithmetic number, because the mean of its divisors is an integer number (29546704).

Almost surely, 2^115500709 is an apocalyptic number.

It is an amenable number.

115500709 is a deficient number, since it is larger than the sum of its proper divisors (2686107).

115500709 is an equidigital number, since it uses as much as digits as its factorization.

115500709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686106.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 115500709 is about 10747.1256157170. The cubic root of 115500709 is about 486.9991651508. Note that the first 3 decimals are identical.

The spelling of 115500709 in words is "one hundred fifteen million, five hundred thousand, seven hundred nine".