115243539 has 8 divisors (see below), whose sum is σ = 153723840. Its totient is φ = 76796136.

The previous prime is 115243537. The next prime is 115243559. The reversal of 115243539 is 935342511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115243539 - 2¹ = 115243537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115243537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644 + ... + 15270.

It is an arithmetic number, because the mean of its divisors is an integer number (19215480).

Almost surely, 2^115243539 is an apocalyptic number.

115243539 is a deficient number, since it is larger than the sum of its proper divisors (38480301).

115243539 is a wasteful number, since it uses less digits than its factorization.

115243539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16449.

The product of its digits is 16200, while the sum is 33.

The square root of 115243539 is about 10735.1543538041. The cubic root of 115243539 is about 486.6374512288.

The spelling of 115243539 in words is "one hundred fifteen million, two hundred forty-three thousand, five hundred thirty-nine".