115530529 has 2 divisors, whose sum is σ = 115530530. Its totient is φ = 115530528.

The previous prime is 115530509. The next prime is 115530533. The reversal of 115530529 is 925035511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115519504 + 11025 = 10748^2 + 105^2 .

It is an emirp because it is prime and its reverse (925035511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115530529 - 2⁹ = 115530017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115530529.

It is not a weakly prime, because it can be changed into another prime (115530509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57765264 + 57765265.

It is an arithmetic number, because the mean of its divisors is an integer number (57765265).

Almost surely, 2^115530529 is an apocalyptic number.

It is an amenable number.

115530529 is a deficient number, since it is larger than the sum of its proper divisors (1).

115530529 is an equidigital number, since it uses as much as digits as its factorization.

115530529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 115530529 is about 10748.5128738817. The cubic root of 115530529 is about 487.0410727305.

It can be divided in two parts, 1155 and 30529, that added together give a square (31684 = 178²).

The spelling of 115530529 in words is "one hundred fifteen million, five hundred thirty thousand, five hundred twenty-nine".