544520909 has 2 divisors, whose sum is σ = 544520910. Its totient is φ = 544520908.

The previous prime is 544520903. The next prime is 544520917. The reversal of 544520909 is 909025445.

544520909 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., 471845284 + 72675625 = 21722^2 + 8525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544520909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544520903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272260454 + 272260455.

It is an arithmetic number, because the mean of its divisors is an integer number (272260455).

Almost surely, 2^544520909 is an apocalyptic number.

It is an amenable number.

544520909 is a deficient number, since it is larger than the sum of its proper divisors (1).

544520909 is an equidigital number, since it uses as much as digits as its factorization.

544520909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 544520909 is about 23334.9718019971. The cubic root of 544520909 is about 816.5914974175.

The spelling of 544520909 in words is "five hundred forty-four million, five hundred twenty thousand, nine hundred nine".