115642559 has 4 divisors (see below), whose sum is σ = 116190840. Its totient is φ = 115094280.

The previous prime is 115642543. The next prime is 115642577. The reversal of 115642559 is 955246511.

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 115642559 - 2⁴ = 115642543 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 (115642259) 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, 273824 + ... + 274245.

It is an arithmetic number, because the mean of its divisors is an integer number (29047710).

Almost surely, 2^115642559 is an apocalyptic number.

115642559 is a deficient number, since it is larger than the sum of its proper divisors (548281).

115642559 is an equidigital number, since it uses as much as digits as its factorization.

115642559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548280.

The product of its digits is 54000, while the sum is 38.

The square root of 115642559 is about 10753.7230297232. The cubic root of 115642559 is about 487.1984498460.

The spelling of 115642559 in words is "one hundred fifteen million, six hundred forty-two thousand, five hundred fifty-nine".