115501539 has 8 divisors (see below), whose sum is σ = 154099792. Its totient is φ = 76952160.

The previous prime is 115501433. The next prime is 115501541. The reversal of 115501539 is 935105511.

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

It is not a de Polignac number, because 115501539 - 2⁷ = 115501411 is a prime.

It is a super-2 number, since 2×115501539² = 26681211022737042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115501559) 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, 6292 + ... + 16449.

It is an arithmetic number, because the mean of its divisors is an integer number (19262474).

Almost surely, 2^115501539 is an apocalyptic number.

115501539 is a deficient number, since it is larger than the sum of its proper divisors (38598253).

115501539 is a wasteful number, since it uses less digits than its factorization.

115501539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24437.

The product of its (nonzero) digits is 3375, while the sum is 30.

The square root of 115501539 is about 10747.1642306238. The cubic root of 115501539 is about 487.0003316901. Note that the first 3 decimals are identical.

The spelling of 115501539 in words is "one hundred fifteen million, five hundred one thousand, five hundred thirty-nine".