115552239 has 32 divisors (see below), whose sum is σ = 172488960. Its totient is φ = 68217600.

The previous prime is 115552237. The next prime is 115552271. The reversal of 115552239 is 932255511.

115552239 = 32² + 33² + ... + 702².

It is not a de Polignac number, because 115552239 - 2¹ = 115552237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115552231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275572 + ... + 275990.

It is an arithmetic number, because the mean of its divisors is an integer number (5390280).

Almost surely, 2^115552239 is an apocalyptic number.

115552239 is a deficient number, since it is larger than the sum of its proper divisors (56936721).

115552239 is a wasteful number, since it uses less digits than its factorization.

115552239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631.

The product of its digits is 13500, while the sum is 33.

The square root of 115552239 is about 10749.5227335915. The cubic root of 115552239 is about 487.0715783741.

The spelling of 115552239 in words is "one hundred fifteen million, five hundred fifty-two thousand, two hundred thirty-nine".