243453461 has 2 divisors, whose sum is σ = 243453462. Its totient is φ = 243453460.

The previous prime is 243453421. The next prime is 243453473. The reversal of 243453461 is 164354342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169390225 + 74063236 = 13015^2 + 8606^2 .

It is a cyclic number.

It is not a de Polignac number, because 243453461 - 2¹⁰ = 243452437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243453421) 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, 121726730 + 121726731.

It is an arithmetic number, because the mean of its divisors is an integer number (121726731).

Almost surely, 2^243453461 is an apocalyptic number.

It is an amenable number.

243453461 is a deficient number, since it is larger than the sum of its proper divisors (1).

243453461 is an equidigital number, since it uses as much as digits as its factorization.

243453461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 32.

The square root of 243453461 is about 15602.9952573216. The cubic root of 243453461 is about 624.4130690452.

The spelling of 243453461 in words is "two hundred forty-three million, four hundred fifty-three thousand, four hundred sixty-one".