2143533 has 16 divisors (see below), whose sum is σ = 3301376. Its totient is φ = 1211760.

The previous prime is 2143517. The next prime is 2143541. The reversal of 2143533 is 3353412.

It is not a de Polignac number, because 2143533 - 2⁴ = 2143517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 2¹⁷ + 1 + 4² + 3³ + 5⁹ + 3⁵ + 3¹⁰ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668 + ... + 2658.

It is an arithmetic number, because the mean of its divisors is an integer number (206336).

2^2143533 is an apocalyptic number.

It is an amenable number.

2143533 is a deficient number, since it is larger than the sum of its proper divisors (1157843).

2143533 is a wasteful number, since it uses less digits than its factorization.

2143533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 1080, while the sum is 21.

The square root of 2143533 is about 1464.0809403855. The cubic root of 2143533 is about 128.9367516398.

Adding to 2143533 its reverse (3353412), we get a palindrome (5496945).

The spelling of 2143533 in words is "two million, one hundred forty-three thousand, five hundred thirty-three".