115529551 has 2 divisors, whose sum is σ = 115529552. Its totient is φ = 115529550.

The previous prime is 115529539. The next prime is 115529563. The reversal of 115529551 is 155925511.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (115529539) and next prime (115529563).

It is a cyclic number.

It is not a de Polignac number, because 115529551 - 2¹⁵ = 115496783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115529951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57764775 + 57764776.

It is an arithmetic number, because the mean of its divisors is an integer number (57764776).

Almost surely, 2^115529551 is an apocalyptic number.

115529551 is a deficient number, since it is larger than the sum of its proper divisors (1).

115529551 is an equidigital number, since it uses as much as digits as its factorization.

115529551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11250, while the sum is 34.

The square root of 115529551 is about 10748.4673791197. The cubic root of 115529551 is about 487.0396984112.

The spelling of 115529551 in words is "one hundred fifteen million, five hundred twenty-nine thousand, five hundred fifty-one".