115529 has 4 divisors (see below), whose sum is σ = 120576. Its totient is φ = 110484.

The previous prime is 115523. The next prime is 115547. The reversal of 115529 is 925511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 925511 = 89 ⋅10399.

It is a cyclic number.

It is not a de Polignac number, because 115529 - 2⁴ = 115513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5023 = 115529 / (1 + 1 + 5 + 5 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115523) 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, 2489 + ... + 2534.

It is an arithmetic number, because the mean of its divisors is an integer number (30144).

2¹¹⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

115529 is a deficient number, since it is larger than the sum of its proper divisors (5047).

115529 is an equidigital number, since it uses as much as digits as its factorization.

115529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046.

The product of its digits is 450, while the sum is 23.

The square root of 115529 is about 339.8955721983. The cubic root of 115529 is about 48.7038924124.

The spelling of 115529 in words is "one hundred fifteen thousand, five hundred twenty-nine".