165017212 has 6 divisors (see below), whose sum is σ = 288780128. Its totient is φ = 82508604.

The previous prime is 165017207. The next prime is 165017213. The reversal of 165017212 is 212710561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165017213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20627148 + ... + 20627155.

Almost surely, 2^165017212 is an apocalyptic number.

It is an amenable number.

165017212 is a deficient number, since it is larger than the sum of its proper divisors (123762916).

165017212 is a wasteful number, since it uses less digits than its factorization.

165017212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41254307 (or 41254305 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 165017212 is about 12845.9025373852. The cubic root of 165017212 is about 548.4997261944.

Adding to 165017212 its reverse (212710561), we get a palindrome (377727773).

The spelling of 165017212 in words is "one hundred sixty-five million, seventeen thousand, two hundred twelve".