115507523 has 4 divisors (see below), whose sum is σ = 115663728. Its totient is φ = 115351320.

The previous prime is 115507507. The next prime is 115507573. The reversal of 115507523 is 325705511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325705511 = 53 ⋅6145387.

It is a cyclic number.

It is not a de Polignac number, because 115507523 - 2⁴ = 115507507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115507573) 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, 76988 + ... + 78473.

It is an arithmetic number, because the mean of its divisors is an integer number (28915932).

Almost surely, 2^115507523 is an apocalyptic number.

115507523 is a deficient number, since it is larger than the sum of its proper divisors (156205).

115507523 is an equidigital number, since it uses as much as digits as its factorization.

115507523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156204.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 115507523 is about 10747.4426260390. The cubic root of 115507523 is about 487.0087418512.

The spelling of 115507523 in words is "one hundred fifteen million, five hundred seven thousand, five hundred twenty-three".