165163252 has 24 divisors (see below), whose sum is σ = 296807112. Its totient is φ = 80371200.

The previous prime is 165163249. The next prime is 165163259. The reversal of 165163252 is 252361561.

It can be written as a sum of positive squares in 4 ways, for example, as 1425636 + 163737616 = 1194^2 + 12796^2 .

It is a super-2 number, since 2×165163252² = 54557799622431008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165163259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84478 + ... + 86410.

It is an arithmetic number, because the mean of its divisors is an integer number (12366963).

Almost surely, 2^165163252 is an apocalyptic number.

It is an amenable number.

165163252 is a deficient number, since it is larger than the sum of its proper divisors (131643860).

165163252 is a wasteful number, since it uses less digits than its factorization.

165163252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2497 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 165163252 is about 12851.5855831100. The cubic root of 165163252 is about 548.6614856463.

The spelling of 165163252 in words is "one hundred sixty-five million, one hundred sixty-three thousand, two hundred fifty-two".