243522427 has 2 divisors, whose sum is σ = 243522428. Its totient is φ = 243522426.

The previous prime is 243522407. The next prime is 243522437. The reversal of 243522427 is 724225342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243522427 - 2⁷ = 243522299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243522407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121761213 + 121761214.

It is an arithmetic number, because the mean of its divisors is an integer number (121761214).

Almost surely, 2^243522427 is an apocalyptic number.

243522427 is a deficient number, since it is larger than the sum of its proper divisors (1).

243522427 is an equidigital number, since it uses as much as digits as its factorization.

243522427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 31.

The square root of 243522427 is about 15605.2051252138. The cubic root of 243522427 is about 624.4720251537.

Adding to 243522427 its reverse (724225342), we get a palindrome (967747769).

The spelling of 243522427 in words is "two hundred forty-three million, five hundred twenty-two thousand, four hundred twenty-seven".