115541 has 4 divisors (see below), whose sum is σ = 118272. Its totient is φ = 112812.

The previous prime is 115523. The next prime is 115547. The reversal of 115541 is 145511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115541 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 (115547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301 + ... + 1386.

It is an arithmetic number, because the mean of its divisors is an integer number (29568).

2¹¹⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

115541 is a deficient number, since it is larger than the sum of its proper divisors (2731).

115541 is an equidigital number, since it uses as much as digits as its factorization.

115541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730.

The product of its digits is 100, while the sum is 17.

The square root of 115541 is about 339.9132242205. The cubic root of 115541 is about 48.7055786455.

It can be divided in two parts, 115 and 541, that added together give a palindrome (656).

The spelling of 115541 in words is "one hundred fifteen thousand, five hundred forty-one".