165522047 has 8 divisors (see below), whose sum is σ = 175627296. Its totient is φ = 155457792.

The previous prime is 165522041. The next prime is 165522067. The reversal of 165522047 is 740225561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165522047 - 2¹⁰ = 165521023 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 (165522041) 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 7 ways as a sum of consecutive naturals, for example, 1718 + ... + 18275.

It is an arithmetic number, because the mean of its divisors is an integer number (21953412).

Almost surely, 2^165522047 is an apocalyptic number.

165522047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

165522047 is a deficient number, since it is larger than the sum of its proper divisors (10105249).

165522047 is a wasteful number, since it uses less digits than its factorization.

165522047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20497.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 165522047 is about 12865.5371827219. The cubic root of 165522047 is about 549.0584961166.

The spelling of 165522047 in words is "one hundred sixty-five million, five hundred twenty-two thousand, forty-seven".