115250161 has 4 divisors (see below), whose sum is σ = 124115572. Its totient is φ = 106384752.

The previous prime is 115250141. The next prime is 115250173. The reversal of 115250161 is 161052511.

It is a happy number.

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 26061025 + 89189136 = 5105^2 + 9444^2 .

It is a cyclic number.

It is not a de Polignac number, because 115250161 - 2¹¹ = 115248113 is a prime.

It is a super-2 number, since 2×115250161² = 26565199221051842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115250101) 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, 4432686 + ... + 4432711.

It is an arithmetic number, because the mean of its divisors is an integer number (31028893).

Almost surely, 2^115250161 is an apocalyptic number.

It is an amenable number.

115250161 is a deficient number, since it is larger than the sum of its proper divisors (8865411).

115250161 is an equidigital number, since it uses as much as digits as its factorization.

115250161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865410.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 115250161 is about 10735.4627753069. The cubic root of 115250161 is about 486.6467719292.

The spelling of 115250161 in words is "one hundred fifteen million, two hundred fifty thousand, one hundred sixty-one".