165711532 has 48 divisors (see below), whose sum is σ = 340200000. Its totient is φ = 70597632.

The previous prime is 165711517. The next prime is 165711541. The reversal of 165711532 is 235117561.

It is a junction number, because it is equal to n+sod(n) for n = 165711494 and 165711503.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 368844 + ... + 369292.

It is an arithmetic number, because the mean of its divisors is an integer number (7087500).

Almost surely, 2^165711532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165711532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170100000).

165711532 is an abundant number, since it is smaller than the sum of its proper divisors (174488468).

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

165711532 is a wasteful number, since it uses less digits than its factorization.

165711532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 727 counting only the distinct ones).

The product of its digits is 6300, while the sum is 31.

The square root of 165711532 is about 12872.8991295667. The cubic root of 165711532 is about 549.2679318105.

The spelling of 165711532 in words is "one hundred sixty-five million, seven hundred eleven thousand, five hundred thirty-two".