165211333 has 4 divisors (see below), whose sum is σ = 188812960. Its totient is φ = 141609708.

The previous prime is 165211331. The next prime is 165211339. The reversal of 165211333 is 333112561.

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 a cyclic number.

It is not a de Polignac number, because 165211333 - 2¹ = 165211331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165211298 and 165211307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165211331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11800803 + ... + 11800816.

It is an arithmetic number, because the mean of its divisors is an integer number (47203240).

Almost surely, 2^165211333 is an apocalyptic number.

It is an amenable number.

165211333 is a deficient number, since it is larger than the sum of its proper divisors (23601627).

165211333 is an equidigital number, since it uses as much as digits as its factorization.

165211333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23601626.

The product of its digits is 1620, while the sum is 25.

The square root of 165211333 is about 12853.4560722010. The cubic root of 165211333 is about 548.7147211231.

Adding to 165211333 its reverse (333112561), we get a palindrome (498323894).

The spelling of 165211333 in words is "one hundred sixty-five million, two hundred eleven thousand, three hundred thirty-three".