115531567 has 4 divisors (see below), whose sum is σ = 115833600. Its totient is φ = 115229536.

The previous prime is 115531561. The next prime is 115531589. The reversal of 115531567 is 765135511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115531567 - 2¹⁹ = 115007279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115531561) 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, 150442 + ... + 151207.

It is an arithmetic number, because the mean of its divisors is an integer number (28958400).

Almost surely, 2^115531567 is an apocalyptic number.

115531567 is a deficient number, since it is larger than the sum of its proper divisors (302033).

115531567 is an equidigital number, since it uses as much as digits as its factorization.

115531567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302032.

The product of its digits is 15750, while the sum is 34.

The square root of 115531567 is about 10748.5611595227. The cubic root of 115531567 is about 487.0425313554.

The spelling of 115531567 in words is "one hundred fifteen million, five hundred thirty-one thousand, five hundred sixty-seven".