115566556 has 12 divisors (see below), whose sum is σ = 231133168. Its totient is φ = 49528512.

The previous prime is 115566551. The next prime is 115566587. The reversal of 115566556 is 655665511.

115566556 is nontrivially palindromic in base 13.

115566556 is an admirable number.

It is a super-2 number, since 2×115566556² = 26711257731402272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115566551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2063661 + ... + 2063716.

Almost surely, 2^115566556 is an apocalyptic number.

It is an amenable number.

115566556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115566556 is a wasteful number, since it uses less digits than its factorization.

115566556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127388 (or 4127386 counting only the distinct ones).

The product of its digits is 135000, while the sum is 40.

The square root of 115566556 is about 10750.1886495075. The cubic root of 115566556 is about 487.0916937086.

The spelling of 115566556 in words is "one hundred fifteen million, five hundred sixty-six thousand, five hundred fifty-six".