165005522 has 12 divisors (see below), whose sum is σ = 272054958. Its totient is φ = 75002400.

The previous prime is 165005509. The next prime is 165005527. The reversal of 165005522 is 225500561.

165005522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133656721 + 31348801 = 11561^2 + 5599^2 .

It is a super-3 number, since 3×165005522³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165005491 and 165005500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165005527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340679 + ... + 341162.

Almost surely, 2^165005522 is an apocalyptic number.

165005522 is a deficient number, since it is larger than the sum of its proper divisors (107049436).

165005522 is a wasteful number, since it uses less digits than its factorization.

165005522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681865 (or 681854 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 165005522 is about 12845.4475204253. The cubic root of 165005522 is about 548.4867737814.

It can be divided in two parts, 16500 and 5522, that added together give a palindrome (22022).

The spelling of 165005522 in words is "one hundred sixty-five million, five thousand, five hundred twenty-two".