165752972 has 24 divisors (see below), whose sum is σ = 361643520. Its totient is φ = 64578960.

The previous prime is 165752971. The next prime is 165752987. The reversal of 165752972 is 279257561.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (165752971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268772 + ... + 269387.

It is an arithmetic number, because the mean of its divisors is an integer number (15068480).

Almost surely, 2^165752972 is an apocalyptic number.

It is an amenable number.

165752972 is an abundant number, since it is smaller than the sum of its proper divisors (195890548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165752972 is a wasteful number, since it uses less digits than its factorization.

165752972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538181 (or 538179 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The square root of 165752972 is about 12874.5086119821. The cubic root of 165752972 is about 549.3137137097.

The spelling of 165752972 in words is "one hundred sixty-five million, seven hundred fifty-two thousand, nine hundred seventy-two".