115772285 has 4 divisors (see below), whose sum is σ = 138926748. Its totient is φ = 92617824.

The previous prime is 115772269. The next prime is 115772287. The reversal of 115772285 is 582277511.

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 66814276 + 48958009 = 8174^2 + 6997^2 .

It is a cyclic number.

It is not a de Polignac number, because 115772285 - 2⁴ = 115772269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115772287) 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, 11577224 + ... + 11577233.

It is an arithmetic number, because the mean of its divisors is an integer number (34731687).

Almost surely, 2^115772285 is an apocalyptic number.

It is an amenable number.

115772285 is a deficient number, since it is larger than the sum of its proper divisors (23154463).

115772285 is an equidigital number, since it uses as much as digits as its factorization.

115772285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23154462.

The product of its digits is 39200, while the sum is 38.

The square root of 115772285 is about 10759.7530176115. The cubic root of 115772285 is about 487.3805589480.

The spelling of 115772285 in words is "one hundred fifteen million, seven hundred seventy-two thousand, two hundred eighty-five".