165124847 has 4 divisors (see below), whose sum is σ = 165178200. Its totient is φ = 165071496.

The previous prime is 165124829. The next prime is 165124871. The reversal of 165124847 is 748421561.

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

It is a cyclic number.

It is not a de Polignac number, because 165124847 - 2¹⁸ = 164862703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165124847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165124147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21728 + ... + 28325.

It is an arithmetic number, because the mean of its divisors is an integer number (41294550).

Almost surely, 2^165124847 is an apocalyptic number.

165124847 is a deficient number, since it is larger than the sum of its proper divisors (53353).

165124847 is an equidigital number, since it uses as much as digits as its factorization.

165124847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53352.

The product of its digits is 53760, while the sum is 38.

The square root of 165124847 is about 12850.0913226327. The cubic root of 165124847 is about 548.6189560530.

The spelling of 165124847 in words is "one hundred sixty-five million, one hundred twenty-four thousand, eight hundred forty-seven".