115520065 has 4 divisors (see below), whose sum is σ = 138624084. Its totient is φ = 92416048.

The previous prime is 115520051. The next prime is 115520143. The reversal of 115520065 is 560025511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560025511 = 2243 ⋅249677.

It can be written as a sum of positive squares in 2 ways, for example, as 20866624 + 94653441 = 4568^2 + 9729^2 .

It is a cyclic number.

It is not a de Polignac number, because 115520065 - 2⁵ = 115520033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11552002 + ... + 11552011.

It is an arithmetic number, because the mean of its divisors is an integer number (34656021).

Almost surely, 2^115520065 is an apocalyptic number.

It is an amenable number.

115520065 is a deficient number, since it is larger than the sum of its proper divisors (23104019).

115520065 is an equidigital number, since it uses as much as digits as its factorization.

115520065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23104018.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 115520065 is about 10748.0260978470. The cubic root of 115520065 is about 487.0263679545.

Adding to 115520065 its reverse (560025511), we get a palindrome (675545576).

The spelling of 115520065 in words is "one hundred fifteen million, five hundred twenty thousand, sixty-five".