115561266 has 16 divisors (see below), whose sum is σ = 231275424. Its totient is φ = 38494944.

The previous prime is 115561231. The next prime is 115561289. The reversal of 115561266 is 662165511.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5025 + ... + 16011.

It is an arithmetic number, because the mean of its divisors is an integer number (14454714).

Almost surely, 2^115561266 is an apocalyptic number.

115561266 is an abundant number, since it is smaller than the sum of its proper divisors (115714158).

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

115561266 is a wasteful number, since it uses less digits than its factorization.

115561266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12745.

The product of its digits is 10800, while the sum is 33.

The square root of 115561266 is about 10749.9426044979. The cubic root of 115561266 is about 487.0842614708.

The spelling of 115561266 in words is "one hundred fifteen million, five hundred sixty-one thousand, two hundred sixty-six".