165532166 has 4 divisors (see below), whose sum is σ = 248298252. Its totient is φ = 82766082.

The previous prime is 165532163. The next prime is 165532177. The reversal of 165532166 is 661235561.

165532166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661235561 = 7 ⋅94462223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165532163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41383040 + ... + 41383043.

It is an arithmetic number, because the mean of its divisors is an integer number (62074563).

Almost surely, 2^165532166 is an apocalyptic number.

165532166 is a deficient number, since it is larger than the sum of its proper divisors (82766086).

165532166 is an equidigital number, since it uses as much as digits as its factorization.

165532166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82766085.

The product of its digits is 32400, while the sum is 35.

The square root of 165532166 is about 12865.9304366221. The cubic root of 165532166 is about 549.0696845752.

The spelling of 165532166 in words is "one hundred sixty-five million, five hundred thirty-two thousand, one hundred sixty-six".