115555601 has 4 divisors (see below), whose sum is σ = 132063552. Its totient is φ = 99047652.

The previous prime is 115555547. The next prime is 115555603. The reversal of 115555601 is 106555511.

It is a happy number.

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: 106555511 = 599 ⋅177889.

It is a cyclic number.

It is not a de Polignac number, because 115555601 - 2⁶ = 115555537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115555603) 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, 8253965 + ... + 8253978.

It is an arithmetic number, because the mean of its divisors is an integer number (33015888).

Almost surely, 2^115555601 is an apocalyptic number.

It is an amenable number.

115555601 is a deficient number, since it is larger than the sum of its proper divisors (16507951).

115555601 is an equidigital number, since it uses as much as digits as its factorization.

115555601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507950.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 115555601 is about 10749.6791114898. The cubic root of 115555601 is about 487.0763021215.

The spelling of 115555601 in words is "one hundred fifteen million, five hundred fifty-five thousand, six hundred one".