544023661 has 2 divisors, whose sum is σ = 544023662. Its totient is φ = 544023660.

The previous prime is 544023607. The next prime is 544023703. The reversal of 544023661 is 166320445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513883561 + 30140100 = 22669^2 + 5490^2 .

It is a cyclic number.

It is not a de Polignac number, because 544023661 - 2²⁷ = 409805933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544023461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272011830 + 272011831.

It is an arithmetic number, because the mean of its divisors is an integer number (272011831).

Almost surely, 2^544023661 is an apocalyptic number.

It is an amenable number.

544023661 is a deficient number, since it is larger than the sum of its proper divisors (1).

544023661 is an equidigital number, since it uses as much as digits as its factorization.

544023661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 544023661 is about 23324.3148023688. The cubic root of 544023661 is about 816.3428555111.

The spelling of 544023661 in words is "five hundred forty-four million, twenty-three thousand, six hundred sixty-one".