165575207 has 8 divisors (see below), whose sum is σ = 190500000. Its totient is φ = 140968224.

The previous prime is 165575203. The next prime is 165575227. The reversal of 165575207 is 702575561.

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 165575207 - 2² = 165575203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165575203) 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, 78332 + ... + 80417.

It is an arithmetic number, because the mean of its divisors is an integer number (23812500).

Almost surely, 2^165575207 is an apocalyptic number.

165575207 is a deficient number, since it is larger than the sum of its proper divisors (24924793).

165575207 is a wasteful number, since it uses less digits than its factorization.

165575207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158905.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 165575207 is about 12867.6030013363. The cubic root of 165575207 is about 549.1172694059.

The spelling of 165575207 in words is "one hundred sixty-five million, five hundred seventy-five thousand, two hundred seven".