243448651 has 2 divisors, whose sum is σ = 243448652. Its totient is φ = 243448650.

The previous prime is 243448643. The next prime is 243448657. The reversal of 243448651 is 156844342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243448651 - 2³ = 243448643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243448651.

It is not a weakly prime, because it can be changed into another prime (243448657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121724325 + 121724326.

It is an arithmetic number, because the mean of its divisors is an integer number (121724326).

Almost surely, 2^243448651 is an apocalyptic number.

243448651 is a deficient number, since it is larger than the sum of its proper divisors (1).

243448651 is an equidigital number, since it uses as much as digits as its factorization.

243448651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 37.

The square root of 243448651 is about 15602.8411194885. The cubic root of 243448651 is about 624.4089567648.

The spelling of 243448651 in words is "two hundred forty-three million, four hundred forty-eight thousand, six hundred fifty-one".