165508332 has 24 divisors (see below), whose sum is σ = 421294272. Its totient is φ = 50154000.

The previous prime is 165508309. The next prime is 165508351. The reversal of 165508332 is 233805561.

It is a super-2 number, since 2×165508332² = 54786015922844448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 165508293 and 165508302.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 626794 + ... + 627057.

It is an arithmetic number, because the mean of its divisors is an integer number (17553928).

Almost surely, 2^165508332 is an apocalyptic number.

165508332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165508332 is an abundant number, since it is smaller than the sum of its proper divisors (255785940).

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

165508332 is a wasteful number, since it uses less digits than its factorization.

165508332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253869 (or 1253867 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 165508332 is about 12865.0041585691. The cubic root of 165508332 is about 549.0433308754.

The spelling of 165508332 in words is "one hundred sixty-five million, five hundred eight thousand, three hundred thirty-two".