165211252 has 12 divisors (see below), whose sum is σ = 291397120. Its totient is φ = 81954936.

The previous prime is 165211237. The next prime is 165211261. The reversal of 165211252 is 252112561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162102 + ... + 163117.

Almost surely, 2^165211252 is an apocalyptic number.

It is an amenable number.

165211252 is a deficient number, since it is larger than the sum of its proper divisors (126185868).

165211252 is a wasteful number, since it uses less digits than its factorization.

165211252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325350 (or 325348 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 165211252 is about 12853.4529212971. The cubic root of 165211252 is about 548.7146314483.

The spelling of 165211252 in words is "one hundred sixty-five million, two hundred eleven thousand, two hundred fifty-two".