744545273 has 2 divisors, whose sum is σ = 744545274. Its totient is φ = 744545272.

The previous prime is 744545261. The next prime is 744545279. The reversal of 744545273 is 372545447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744362089 + 183184 = 27283^2 + 428^2 .

It is an emirp because it is prime and its reverse (372545447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 744545273 - 2⁴ = 744545257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 744545273.

It is not a weakly prime, because it can be changed into another prime (744545279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372272636 + 372272637.

It is an arithmetic number, because the mean of its divisors is an integer number (372272637).

Almost surely, 2^744545273 is an apocalyptic number.

It is an amenable number.

744545273 is a deficient number, since it is larger than the sum of its proper divisors (1).

744545273 is an equidigital number, since it uses as much as digits as its factorization.

744545273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 41.

The square root of 744545273 is about 27286.3569023056. The cubic root of 744545273 is about 906.3522910902.

The spelling of 744545273 in words is "seven hundred forty-four million, five hundred forty-five thousand, two hundred seventy-three".