165247113 has 4 divisors (see below), whose sum is σ = 220329488. Its totient is φ = 110164740.

The previous prime is 165247099. The next prime is 165247129. The reversal of 165247113 is 311742561.

165247113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 165247113 - 2¹⁸ = 164984969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165247183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27541183 + ... + 27541188.

It is an arithmetic number, because the mean of its divisors is an integer number (55082372).

Almost surely, 2^165247113 is an apocalyptic number.

It is an amenable number.

165247113 is a deficient number, since it is larger than the sum of its proper divisors (55082375).

165247113 is an equidigital number, since it uses as much as digits as its factorization.

165247113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55082374.

The product of its digits is 5040, while the sum is 30.

The square root of 165247113 is about 12854.8478404064. The cubic root of 165247113 is about 548.7543301807.

Adding to 165247113 its reverse (311742561), we get a palindrome (476989674).

The spelling of 165247113 in words is "one hundred sixty-five million, two hundred forty-seven thousand, one hundred thirteen".