113506561 has 8 divisors (see below), whose sum is σ = 130593600. Its totient is φ = 96637488.

The previous prime is 113506537. The next prime is 113506571. The reversal of 113506561 is 165605311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113506561 - 2²⁵ = 79952129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113506571) 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 in 7 ways as a sum of consecutive naturals, for example, 53371 + ... + 55456.

It is an arithmetic number, because the mean of its divisors is an integer number (16324200).

Almost surely, 2^113506561 is an apocalyptic number.

It is an amenable number.

113506561 is a deficient number, since it is larger than the sum of its proper divisors (17087039).

113506561 is a wasteful number, since it uses less digits than its factorization.

113506561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108983.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 113506561 is about 10653.9457948687. The cubic root of 113506561 is about 484.1801588380.

The spelling of 113506561 in words is "one hundred thirteen million, five hundred six thousand, five hundred sixty-one".