115571 has 2 divisors, whose sum is σ = 115572. Its totient is φ = 115570.

The previous prime is 115561. The next prime is 115589. The reversal of 115571 is 175511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115571 - 2¹⁰ = 114547 is a prime.

It is a Chen prime.

It is an Ulam number.

It is equal to p₁₀₉₁₉ and since 115571 and 10919 have the same sum of digits, it is a Honaker prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 115571.

It is not a weakly prime, because it can be changed into another prime (115561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57785 + 57786.

It is an arithmetic number, because the mean of its divisors is an integer number (57786).

2¹¹⁵⁵⁷¹ is an apocalyptic number.

115571 is a deficient number, since it is larger than the sum of its proper divisors (1).

115571 is an equidigital number, since it uses as much as digits as its factorization.

115571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 175, while the sum is 20.

The square root of 115571 is about 339.9573502662. The cubic root of 115571 is about 48.7097937175.

It can be divided in two parts, 115 and 571, that added together give a palindrome (686).

The spelling of 115571 in words is "one hundred fifteen thousand, five hundred seventy-one".