115665051 has 4 divisors (see below), whose sum is σ = 154220072. Its totient is φ = 77110032.

The previous prime is 115665049. The next prime is 115665083. The reversal of 115665051 is 150566511.

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

It is not a de Polignac number, because 115665051 - 2¹ = 115665049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115665001) 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, 19277506 + ... + 19277511.

It is an arithmetic number, because the mean of its divisors is an integer number (38555018).

Almost surely, 2^115665051 is an apocalyptic number.

115665051 is a deficient number, since it is larger than the sum of its proper divisors (38555021).

115665051 is an equidigital number, since it uses as much as digits as its factorization.

115665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38555020.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 115665051 is about 10754.7687562309. The cubic root of 115665051 is about 487.2300338271.

The spelling of 115665051 in words is "one hundred fifteen million, six hundred sixty-five thousand, fifty-one".