243053729 has 2 divisors, whose sum is σ = 243053730. Its totient is φ = 243053728.

The previous prime is 243053711. The next prime is 243053737. The reversal of 243053729 is 927350342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123654400 + 119399329 = 11120^2 + 10927^2 .

It is a cyclic number.

It is not a de Polignac number, because 243053729 - 2²⁴ = 226276513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243058729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121526864 + 121526865.

It is an arithmetic number, because the mean of its divisors is an integer number (121526865).

Almost surely, 2^243053729 is an apocalyptic number.

It is an amenable number.

243053729 is a deficient number, since it is larger than the sum of its proper divisors (1).

243053729 is an equidigital number, since it uses as much as digits as its factorization.

243053729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 243053729 is about 15590.1805313473. The cubic root of 243053729 is about 624.0711356348.

The spelling of 243053729 in words is "two hundred forty-three million, fifty-three thousand, seven hundred twenty-nine".