2544332021 has 16 divisors (see below), whose sum is σ = 3224162688. Its totient is φ = 1950091200.

The previous prime is 2544331969. The next prime is 2544332041. The reversal of 2544332021 is 1202334452.

It is a cyclic number.

It is not a de Polignac number, because 2544332021 - 2¹⁸ = 2544069877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544332041) 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, 266150 + ... + 275543.

It is an arithmetic number, because the mean of its divisors is an integer number (201510168).

Almost surely, 2^2544332021 is an apocalyptic number.

It is an amenable number.

2544332021 is a deficient number, since it is larger than the sum of its proper divisors (679830667).

2544332021 is a wasteful number, since it uses less digits than its factorization.

2544332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541772.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2544332021 is about 50441.3721165473. The cubic root of 2544332021 is about 1365.1842248457.

Adding to 2544332021 its reverse (1202334452), we get a palindrome (3746666473).

The spelling of 2544332021 in words is "two billion, five hundred forty-four million, three hundred thirty-two thousand, twenty-one".