165757165 has 8 divisors (see below), whose sum is σ = 227324160. Its totient is φ = 113662032.

The previous prime is 165757147. The next prime is 165757171. The reversal of 165757165 is 561757561.

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 165757165 - 2⁷ = 165757037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2367925 + ... + 2367994.

It is an arithmetic number, because the mean of its divisors is an integer number (28415520).

Almost surely, 2^165757165 is an apocalyptic number.

It is an amenable number.

165757165 is a deficient number, since it is larger than the sum of its proper divisors (61566995).

165757165 is an equidigital number, since it uses as much as digits as its factorization.

165757165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735931.

The product of its digits is 220500, while the sum is 43.

The square root of 165757165 is about 12874.6714521187. The cubic root of 165757165 is about 549.3183456086.

The spelling of 165757165 in words is "one hundred sixty-five million, seven hundred fifty-seven thousand, one hundred sixty-five".