115905655 has 4 divisors (see below), whose sum is σ = 139086792. Its totient is φ = 92724520.

The previous prime is 115905653. The next prime is 115905707. The reversal of 115905655 is 556509511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556509511 = 2503 ⋅222337.

It is not a de Polignac number, because 115905655 - 2¹ = 115905653 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 (115905653) 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, 11590561 + ... + 11590570.

It is an arithmetic number, because the mean of its divisors is an integer number (34771698).

Almost surely, 2^115905655 is an apocalyptic number.

115905655 is a deficient number, since it is larger than the sum of its proper divisors (23181137).

115905655 is an equidigital number, since it uses as much as digits as its factorization.

115905655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23181136.

The product of its (nonzero) digits is 33750, while the sum is 37.

The square root of 115905655 is about 10765.9488666815. The cubic root of 115905655 is about 487.5676417209.

The spelling of 115905655 in words is "one hundred fifteen million, nine hundred five thousand, six hundred fifty-five".