243452201 has 2 divisors, whose sum is σ = 243452202. Its totient is φ = 243452200.

The previous prime is 243452191. The next prime is 243452203. The reversal of 243452201 is 102254342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 97042201 = 12100^2 + 9851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243452201 is a prime.

Together with 243452203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243452203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121726100 + 121726101.

It is an arithmetic number, because the mean of its divisors is an integer number (121726101).

Almost surely, 2^243452201 is an apocalyptic number.

It is an amenable number.

243452201 is a deficient number, since it is larger than the sum of its proper divisors (1).

243452201 is an equidigital number, since it uses as much as digits as its factorization.

243452201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 243452201 is about 15602.9548804065. The cubic root of 243452201 is about 624.4119918210.

The spelling of 243452201 in words is "two hundred forty-three million, four hundred fifty-two thousand, two hundred one".