165531532 has 12 divisors (see below), whose sum is σ = 290412640. Its totient is φ = 82556496.

The previous prime is 165531523. The next prime is 165531539. The reversal of 165531532 is 235135561.

It is a junction number, because it is equal to n+sod(n) for n = 165531494 and 165531503.

It is not an unprimeable number, because it can be changed into a prime (165531539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50532 + ... + 53707.

Almost surely, 2^165531532 is an apocalyptic number.

It is an amenable number.

165531532 is a deficient number, since it is larger than the sum of its proper divisors (124881108).

165531532 is a wasteful number, since it uses less digits than its factorization.

165531532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104640 (or 104638 counting only the distinct ones).

The product of its digits is 13500, while the sum is 31.

The square root of 165531532 is about 12865.9057978830. The cubic root of 165531532 is about 549.0689835823.

The spelling of 165531532 in words is "one hundred sixty-five million, five hundred thirty-one thousand, five hundred thirty-two".