165575147 has 4 divisors (see below), whose sum is σ = 165718680. Its totient is φ = 165431616.

The previous prime is 165575143. The next prime is 165575153. The reversal of 165575147 is 741575561.

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 165575147 - 2² = 165575143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165575143) 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, 70022 + ... + 72347.

It is an arithmetic number, because the mean of its divisors is an integer number (41429670).

Almost surely, 2^165575147 is an apocalyptic number.

165575147 is a deficient number, since it is larger than the sum of its proper divisors (143533).

165575147 is a wasteful number, since it uses less digits than its factorization.

165575147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143532.

The product of its digits is 147000, while the sum is 41.

The square root of 165575147 is about 12867.6006698996. The cubic root of 165575147 is about 549.1172030775.

The spelling of 165575147 in words is "one hundred sixty-five million, five hundred seventy-five thousand, one hundred forty-seven".