115561606 has 4 divisors (see below), whose sum is σ = 173342412. Its totient is φ = 57780802.

The previous prime is 115561601. The next prime is 115561643. The reversal of 115561606 is 606165511.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115561601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28890400 + ... + 28890403.

It is an arithmetic number, because the mean of its divisors is an integer number (43335603).

Almost surely, 2^115561606 is an apocalyptic number.

115561606 is a deficient number, since it is larger than the sum of its proper divisors (57780806).

115561606 is an equidigital number, since it uses as much as digits as its factorization.

115561606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57780805.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 115561606 is about 10749.9584185242. The cubic root of 115561606 is about 487.0847391640.

The spelling of 115561606 in words is "one hundred fifteen million, five hundred sixty-one thousand, six hundred six".