544021 has 2 divisors, whose sum is σ = 544022. Its totient is φ = 544020.

The previous prime is 544013. The next prime is 544031. The reversal of 544021 is 120445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509796 + 34225 = 714^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 544021 - 2³ = 544013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 543986 and 544004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272010 + 272011.

It is an arithmetic number, because the mean of its divisors is an integer number (272011).

2⁵⁴⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

544021 is a deficient number, since it is larger than the sum of its proper divisors (1).

544021 is an equidigital number, since it uses as much as digits as its factorization.

544021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 544021 is about 737.5777925073. The cubic root of 544021 is about 81.6341524508.

Adding to 544021 its reverse (120445), we get a palindrome (664466).

The spelling of 544021 in words is "five hundred forty-four thousand, twenty-one".