165543272 has 16 divisors (see below), whose sum is σ = 310534560. Its totient is φ = 82734064.

The previous prime is 165543269. The next prime is 165543277. The reversal of 165543272 is 272345561.

It is not an unprimeable number, because it can be changed into a prime (165543277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25283 + ... + 31149.

It is an arithmetic number, because the mean of its divisors is an integer number (19408410).

Almost surely, 2^165543272 is an apocalyptic number.

It is an amenable number.

165543272 is a deficient number, since it is larger than the sum of its proper divisors (144991288).

165543272 is a wasteful number, since it uses less digits than its factorization.

165543272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400 (or 9396 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 165543272 is about 12866.3620343903. The cubic root of 165543272 is about 549.0819638232.

The spelling of 165543272 in words is "one hundred sixty-five million, five hundred forty-three thousand, two hundred seventy-two".