115520045 has 4 divisors (see below), whose sum is σ = 138624060. Its totient is φ = 92416032.

The previous prime is 115520033. The next prime is 115520051. The reversal of 115520045 is 540025511.

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: 540025511 = 3823 ⋅141257.

It can be written as a sum of positive squares in 2 ways, for example, as 87366409 + 28153636 = 9347^2 + 5306^2 .

It is a cyclic number.

It is not a de Polignac number, because 115520045 - 2⁴ = 115520029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115520045.

It is a congruent 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, 11552000 + ... + 11552009.

It is an arithmetic number, because the mean of its divisors is an integer number (34656015).

Almost surely, 2^115520045 is an apocalyptic number.

It is an amenable number.

115520045 is a deficient number, since it is larger than the sum of its proper divisors (23104015).

115520045 is an equidigital number, since it uses as much as digits as its factorization.

115520045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23104014.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 115520045 is about 10748.0251674436. The cubic root of 115520045 is about 487.0263398482.

Adding to 115520045 its reverse (540025511), we get a palindrome (655545556).

The spelling of 115520045 in words is "one hundred fifteen million, five hundred twenty thousand, forty-five".