115566555 has 16 divisors (see below), whose sum is σ = 199130400. Its totient is φ = 56894208.

The previous prime is 115566551. The next prime is 115566587. The reversal of 115566555 is 555665511.

It is not a de Polignac number, because 115566555 - 2² = 115566551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 10.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296130 + ... + 296519.

It is an arithmetic number, because the mean of its divisors is an integer number (12445650).

Almost surely, 2^115566555 is an apocalyptic number.

115566555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115566555 is a deficient number, since it is larger than the sum of its proper divisors (83563845).

115566555 is a wasteful number, since it uses less digits than its factorization.

115566555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592670.

The product of its digits is 112500, while the sum is 39.

The square root of 115566555 is about 10750.1886029967. The cubic root of 115566555 is about 487.0916923037.

The spelling of 115566555 in words is "one hundred fifteen million, five hundred sixty-six thousand, five hundred fifty-five".