165233145 has 96 divisors (see below), whose sum is σ = 340402176. Its totient is φ = 67670400.

The previous prime is 165233143. The next prime is 165233179. The reversal of 165233145 is 541332561.

It is not a de Polignac number, because 165233145 - 2¹ = 165233143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165233143) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 865000 + ... + 865190.

It is an arithmetic number, because the mean of its divisors is an integer number (3545856).

Almost surely, 2^165233145 is an apocalyptic number.

165233145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165233145 is an abundant number, since it is smaller than the sum of its proper divisors (175169031).

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

165233145 is a wasteful number, since it uses less digits than its factorization.

165233145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 324 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 165233145 is about 12854.3045319457. The cubic root of 165233145 is about 548.7388680518.

The spelling of 165233145 in words is "one hundred sixty-five million, two hundred thirty-three thousand, one hundred forty-five".