544561993 has 2 divisors, whose sum is σ = 544561994. Its totient is φ = 544561992.

The previous prime is 544561949. The next prime is 544562023. The reversal of 544561993 is 399165445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362635849 + 181926144 = 19043^2 + 13488^2 .

It is a cyclic number.

It is not a de Polignac number, because 544561993 - 2⁹ = 544561481 is a prime.

It is not a weakly prime, because it can be changed into another prime (544565993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272280996 + 272280997.

It is an arithmetic number, because the mean of its divisors is an integer number (272280997).

Almost surely, 2^544561993 is an apocalyptic number.

It is an amenable number.

544561993 is a deficient number, since it is larger than the sum of its proper divisors (1).

544561993 is an equidigital number, since it uses as much as digits as its factorization.

544561993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 544561993 is about 23335.8520950061. The cubic root of 544561993 is about 816.6120341259.

The spelling of 544561993 in words is "five hundred forty-four million, five hundred sixty-one thousand, nine hundred ninety-three".