115945 has 4 divisors (see below), whose sum is σ = 139140. Its totient is φ = 92752.

The previous prime is 115933. The next prime is 115963. The reversal of 115945 is 549511.

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 52441 + 63504 = 229^2 + 252^2 .

It is a cyclic number.

It is not a de Polignac number, because 115945 - 2¹⁵ = 83177 is a prime.

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, 11590 + ... + 11599.

It is an arithmetic number, because the mean of its divisors is an integer number (34785).

2¹¹⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

115945 is a deficient number, since it is larger than the sum of its proper divisors (23195).

115945 is an equidigital number, since it uses as much as digits as its factorization.

115945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23194.

The product of its digits is 900, while the sum is 25.

The square root of 115945 is about 340.5069749653. The cubic root of 115945 is about 48.7622804916.

It can be divided in two parts, 11594 and 5, that multiplied together give a triangular number (57970 = T₃₄₀).

The spelling of 115945 in words is "one hundred fifteen thousand, nine hundred forty-five".