115895581 has 8 divisors (see below), whose sum is σ = 120210264. Its totient is φ = 111643200.

The previous prime is 115895557. The next prime is 115895587. The reversal of 115895581 is 185598511.

It can be written as a sum of positive squares in 4 ways, for example, as 30702681 + 85192900 = 5541^2 + 9230^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115895581 - 2¹³ = 115887389 is a prime.

It is a super-2 number, since 2×115895581² = 26863571390655122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115895587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11770 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (15026283).

Almost surely, 2^115895581 is an apocalyptic number.

It is an amenable number.

115895581 is a deficient number, since it is larger than the sum of its proper divisors (4314683).

115895581 is a wasteful number, since it uses less digits than its factorization.

115895581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31151.

The product of its digits is 72000, while the sum is 43.

The square root of 115895581 is about 10765.4809925056. The cubic root of 115895581 is about 487.5535155803.

The spelling of 115895581 in words is "one hundred fifteen million, eight hundred ninety-five thousand, five hundred eighty-one".