165539275 has 12 divisors (see below), whose sum is σ = 223929864. Its totient is φ = 120392000.

The previous prime is 165539261. The next prime is 165539317. The reversal of 165539275 is 572935561.

It is not a de Polignac number, because 165539275 - 2¹⁹ = 165014987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 300706 + ... + 301255.

It is an arithmetic number, because the mean of its divisors is an integer number (18660822).

Almost surely, 2^165539275 is an apocalyptic number.

165539275 is a deficient number, since it is larger than the sum of its proper divisors (58390589).

165539275 is a wasteful number, since it uses less digits than its factorization.

165539275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601982 (or 601977 counting only the distinct ones).

The product of its digits is 283500, while the sum is 43.

The square root of 165539275 is about 12866.2067059410. The cubic root of 165539275 is about 549.0775446397.

The spelling of 165539275 in words is "one hundred sixty-five million, five hundred thirty-nine thousand, two hundred seventy-five".