115512745 has 4 divisors (see below), whose sum is σ = 138615300. Its totient is φ = 92410192.

The previous prime is 115512743. The next prime is 115512751. The reversal of 115512745 is 547215511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46090521 + 69422224 = 6789^2 + 8332^2 .

It is a cyclic number.

It is not a de Polignac number, because 115512745 - 2¹ = 115512743 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (115512743) 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, 11551270 + ... + 11551279.

It is an arithmetic number, because the mean of its divisors is an integer number (34653825).

Almost surely, 2^115512745 is an apocalyptic number.

It is an amenable number.

115512745 is a deficient number, since it is larger than the sum of its proper divisors (23102555).

115512745 is an equidigital number, since it uses as much as digits as its factorization.

115512745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23102554.

The product of its digits is 7000, while the sum is 31.

The square root of 115512745 is about 10747.6855648088. The cubic root of 115512745 is about 487.0160808287.

The spelling of 115512745 in words is "one hundred fifteen million, five hundred twelve thousand, seven hundred forty-five".