2123533 has 4 divisors (see below), whose sum is σ = 2127708. Its totient is φ = 2119360.

The previous prime is 2123491. The next prime is 2123557. The reversal of 2123533 is 3353212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1630729 + 492804 = 1277^2 + 702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123533 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 2²¹ + 3 + 5 + 3⁸ + 3⁹ .

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 2123533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133533) 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, 1198 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (531927).

2^2123533 is an apocalyptic number.

It is an amenable number.

2123533 is a deficient number, since it is larger than the sum of its proper divisors (4175).

2123533 is an equidigital number, since it uses as much as digits as its factorization.

2123533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174.

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

The square root of 2123533 is about 1457.2347099901. The cubic root of 2123533 is about 128.5344878588.

Adding to 2123533 its reverse (3353212), we get a palindrome (5476745).

The spelling of 2123533 in words is "two million, one hundred twenty-three thousand, five hundred thirty-three".