243884051 has 2 divisors, whose sum is σ = 243884052. Its totient is φ = 243884050.

The previous prime is 243884027. The next prime is 243884063. The reversal of 243884051 is 150488342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243884051 - 2¹⁸ = 243621907 is a prime.

It is not a weakly prime, because it can be changed into another prime (243884071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121942025 + 121942026.

It is an arithmetic number, because the mean of its divisors is an integer number (121942026).

Almost surely, 2^243884051 is an apocalyptic number.

243884051 is a deficient number, since it is larger than the sum of its proper divisors (1).

243884051 is an equidigital number, since it uses as much as digits as its factorization.

243884051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 243884051 is about 15616.7874737412. The cubic root of 243884051 is about 624.7809801108.

The spelling of 243884051 in words is "two hundred forty-three million, eight hundred eighty-four thousand, fifty-one".