243885053 has 2 divisors, whose sum is σ = 243885054. Its totient is φ = 243885052.

The previous prime is 243885023. The next prime is 243885067. The reversal of 243885053 is 350588342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239228089 + 4656964 = 15467^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 243885053 - 2⁶ = 243884989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243884998 and 243885016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243885013) 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, 121942526 + 121942527.

It is an arithmetic number, because the mean of its divisors is an integer number (121942527).

Almost surely, 2^243885053 is an apocalyptic number.

It is an amenable number.

243885053 is a deficient number, since it is larger than the sum of its proper divisors (1).

243885053 is an equidigital number, since it uses as much as digits as its factorization.

243885053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 243885053 is about 15616.8195545700. The cubic root of 243885053 is about 624.7818357492.

The spelling of 243885053 in words is "two hundred forty-three million, eight hundred eighty-five thousand, fifty-three".