165232533 has 4 divisors (see below), whose sum is σ = 220310048. Its totient is φ = 110155020.

The previous prime is 165232523. The next prime is 165232553. The reversal of 165232533 is 335232561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 165232533 - 2¹⁰ = 165231509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165232533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165232523) 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, 27538753 + ... + 27538758.

It is an arithmetic number, because the mean of its divisors is an integer number (55077512).

Almost surely, 2^165232533 is an apocalyptic number.

It is an amenable number.

165232533 is a deficient number, since it is larger than the sum of its proper divisors (55077515).

165232533 is an equidigital number, since it uses as much as digits as its factorization.

165232533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55077514.

The product of its digits is 16200, while the sum is 30.

The square root of 165232533 is about 12854.2807266685. The cubic root of 165232533 is about 548.7381905675.

The spelling of 165232533 in words is "one hundred sixty-five million, two hundred thirty-two thousand, five hundred thirty-three".