2145733 has 4 divisors (see below), whose sum is σ = 2148748. Its totient is φ = 2142720.

The previous prime is 2145721. The next prime is 2145763. The reversal of 2145733 is 3375412.

2145733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 613089 + 1532644 = 783^2 + 1238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145733 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 1 + 4 + 5⁹ + 7⁴ + 3⁴ + 3¹⁰ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145698 and 2145707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (537187).

2^2145733 is an apocalyptic number.

It is an amenable number.

2145733 is a deficient number, since it is larger than the sum of its proper divisors (3015).

2145733 is a wasteful number, since it uses less digits than its factorization.

2145733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014.

The product of its digits is 2520, while the sum is 25.

The square root of 2145733 is about 1464.8320722868. The cubic root of 2145733 is about 128.9808476664.

It can be divided in two parts, 21 and 45733, that added together give a palindrome (45754).

The spelling of 2145733 in words is "two million, one hundred forty-five thousand, seven hundred thirty-three".