165256115 has 8 divisors (see below), whose sum is σ = 199046160. Its totient is φ = 131712352.

The previous prime is 165256111. The next prime is 165256151. The reversal of 165256115 is 511652561.

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 165256115 - 2² = 165256111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165256111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60089 + ... + 62778.

It is an arithmetic number, because the mean of its divisors is an integer number (24880770).

Almost surely, 2^165256115 is an apocalyptic number.

165256115 is a deficient number, since it is larger than the sum of its proper divisors (33790045).

165256115 is a wasteful number, since it uses less digits than its factorization.

165256115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123141.

The product of its digits is 9000, while the sum is 32.

The square root of 165256115 is about 12855.1979759162. The cubic root of 165256115 is about 548.7642946448.

The spelling of 165256115 in words is "one hundred sixty-five million, two hundred fifty-six thousand, one hundred fifteen".