115761 has 8 divisors (see below), whose sum is σ = 157824. Its totient is φ = 75440.

The previous prime is 115757. The next prime is 115763. The reversal of 115761 is 167511.

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 115761 - 2² = 115757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (19728).

2¹¹⁵⁷⁶¹ is an apocalyptic number.

It is an amenable number.

115761 is a deficient number, since it is larger than the sum of its proper divisors (42063).

115761 is an equidigital number, since it uses as much as digits as its factorization.

115761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its digits is 210, while the sum is 21.

The square root of 115761 is about 340.2366823257. The cubic root of 115761 is about 48.7364722491.

The spelling of 115761 in words is "one hundred fifteen thousand, seven hundred sixty-one".