165213175 has 6 divisors (see below), whose sum is σ = 204864368. Its totient is φ = 132170520.

The previous prime is 165213161. The next prime is 165213187. The reversal of 165213175 is 571312561.

It is not a de Polignac number, because 165213175 - 2⁷ = 165213047 is a prime.

It is a Duffinian number.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 3304239 + ... + 3304288.

Almost surely, 2^165213175 is an apocalyptic number.

165213175 is a deficient number, since it is larger than the sum of its proper divisors (39651193).

165213175 is an equidigital number, since it uses as much as digits as its factorization.

165213175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608537 (or 6608532 counting only the distinct ones).

The product of its digits is 6300, while the sum is 31.

The square root of 165213175 is about 12853.5277258813. The cubic root of 165213175 is about 548.7167603875.

The spelling of 165213175 in words is "one hundred sixty-five million, two hundred thirteen thousand, one hundred seventy-five".