2421533543 has 16 divisors (see below), whose sum is σ = 2849194656. Its totient is φ = 2028973440.

The previous prime is 2421533539. The next prime is 2421533551. The reversal of 2421533543 is 3453351242.

2421533543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2421533543 - 2² = 2421533539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421533563) 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, 84305 + ... + 109317.

It is an arithmetic number, because the mean of its divisors is an integer number (178074666).

Almost surely, 2^2421533543 is an apocalyptic number.

2421533543 is a deficient number, since it is larger than the sum of its proper divisors (427661113).

2421533543 is a wasteful number, since it uses less digits than its factorization.

2421533543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25714.

The product of its digits is 43200, while the sum is 32.

The square root of 2421533543 is about 49209.0798836963. The cubic root of 2421533543 is about 1342.8582235268.

Adding to 2421533543 its reverse (3453351242), we get a palindrome (5874884785).

The spelling of 2421533543 in words is "two billion, four hundred twenty-one million, five hundred thirty-three thousand, five hundred forty-three".