544195021 has 2 divisors, whose sum is σ = 544195022. Its totient is φ = 544195020.

The previous prime is 544195013. The next prime is 544195073. The reversal of 544195021 is 120591445.

544195021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417384900 + 126810121 = 20430^2 + 11261^2 .

It is a cyclic number.

It is not a de Polignac number, because 544195021 - 2³ = 544195013 is a prime.

It is a super-2 number, since 2×544195021² = 592296441762380882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544195081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272097510 + 272097511.

It is an arithmetic number, because the mean of its divisors is an integer number (272097511).

Almost surely, 2^544195021 is an apocalyptic number.

It is an amenable number.

544195021 is a deficient number, since it is larger than the sum of its proper divisors (1).

544195021 is an equidigital number, since it uses as much as digits as its factorization.

544195021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 544195021 is about 23327.9879329530. The cubic root of 544195021 is about 816.4285587851.

The spelling of 544195021 in words is "five hundred forty-four million, one hundred ninety-five thousand, twenty-one".