2321533 has 4 divisors (see below), whose sum is σ = 2324668. Its totient is φ = 2318400.

The previous prime is 2321531. The next prime is 2321563. The reversal of 2321533 is 3351232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 544644 + 1776889 = 738^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321533 - 2¹ = 2321531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2321533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (581167).

2^2321533 is an apocalyptic number.

It is an amenable number.

2321533 is a deficient number, since it is larger than the sum of its proper divisors (3135).

2321533 is a wasteful number, since it uses less digits than its factorization.

2321533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134.

The product of its digits is 540, while the sum is 19.

The square root of 2321533 is about 1523.6577699733. The cubic root of 2321533 is about 132.4112708434.

Adding to 2321533 its reverse (3351232), we get a palindrome (5672765).

The spelling of 2321533 in words is "two million, three hundred twenty-one thousand, five hundred thirty-three".