165530156 has 48 divisors (see below), whose sum is σ = 343701792. Its totient is φ = 68889600.

The previous prime is 165530153. The next prime is 165530171. The reversal of 165530156 is 651035561.

It is not an unprimeable number, because it can be changed into a prime (165530153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24686 + ... + 30666.

It is an arithmetic number, because the mean of its divisors is an integer number (7160454).

Almost surely, 2^165530156 is an apocalyptic number.

It is an amenable number.

165530156 is an abundant number, since it is smaller than the sum of its proper divisors (178171636).

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

165530156 is a wasteful number, since it uses less digits than its factorization.

165530156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050 (or 6048 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 165530156 is about 12865.8523231071. The cubic root of 165530156 is about 549.0674621782.

The spelling of 165530156 in words is "one hundred sixty-five million, five hundred thirty thousand, one hundred fifty-six".