115567 has 4 divisors (see below), whose sum is σ = 116440. Its totient is φ = 114696.

The previous prime is 115561. The next prime is 115571. The reversal of 115567 is 765511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 765511 = 41 ⋅18671.

It is a cyclic number.

It is not a de Polignac number, because 115567 - 2¹⁵ = 82799 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (29110).

2¹¹⁵⁵⁶⁷ is an apocalyptic number.

115567 is a deficient number, since it is larger than the sum of its proper divisors (873).

115567 is an equidigital number, since it uses as much as digits as its factorization.

115567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 1050, while the sum is 25.

The square root of 115567 is about 339.9514671244. The cubic root of 115567 is about 48.7092317500.

The spelling of 115567 in words is "one hundred fifteen thousand, five hundred sixty-seven".