115571147 has 4 divisors (see below), whose sum is σ = 117530040. Its totient is φ = 113612256.

The previous prime is 115571107. The next prime is 115571153. The reversal of 115571147 is 741175511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115571147 - 2²⁶ = 48462283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115571107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979358 + ... + 979475.

It is an arithmetic number, because the mean of its divisors is an integer number (29382510).

Almost surely, 2^115571147 is an apocalyptic number.

115571147 is a deficient number, since it is larger than the sum of its proper divisors (1958893).

115571147 is an equidigital number, since it uses as much as digits as its factorization.

115571147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958892.

The product of its digits is 4900, while the sum is 32.

The square root of 115571147 is about 10750.4021785234. The cubic root of 115571147 is about 487.0981436956.

The spelling of 115571147 in words is "one hundred fifteen million, five hundred seventy-one thousand, one hundred forty-seven".