113555865 has 8 divisors (see below), whose sum is σ = 181689408. Its totient is φ = 60563120.

The previous prime is 113555791. The next prime is 113555879. The reversal of 113555865 is 568555311.

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

It is not a de Polignac number, because 113555865 - 2¹⁵ = 113523097 is a prime.

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, 3785181 + ... + 3785210.

It is an arithmetic number, because the mean of its divisors is an integer number (22711176).

Almost surely, 2^113555865 is an apocalyptic number.

113555865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113555865 is a deficient number, since it is larger than the sum of its proper divisors (68133543).

113555865 is an equidigital number, since it uses as much as digits as its factorization.

113555865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7570399.

The product of its digits is 90000, while the sum is 39.

The square root of 113555865 is about 10656.2594281483. The cubic root of 113555865 is about 484.2502533557.

The spelling of 113555865 in words is "one hundred thirteen million, five hundred fifty-five thousand, eight hundred sixty-five".