115655009 has 4 divisors (see below), whose sum is σ = 115706160. Its totient is φ = 115603860.

The previous prime is 115655003. The next prime is 115655021. The reversal of 115655009 is 900556511.

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.

It is a cyclic number.

It is not a de Polignac number, because 115655009 - 2¹⁶ = 115589473 is a prime.

It is a super-2 number, since 2×115655009² = 26752162213580162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115655003) 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, 22019 + ... + 26760.

It is an arithmetic number, because the mean of its divisors is an integer number (28926540).

Almost surely, 2^115655009 is an apocalyptic number.

It is an amenable number.

115655009 is a deficient number, since it is larger than the sum of its proper divisors (51151).

115655009 is an equidigital number, since it uses as much as digits as its factorization.

115655009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51150.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 115655009 is about 10754.3018834325. The cubic root of 115655009 is about 487.2159330376.

It can be divided in two parts, 1156 and 55009, that added together give a palindrome (56165).

The spelling of 115655009 in words is "one hundred fifteen million, six hundred fifty-five thousand, nine".