243525041 has 2 divisors, whose sum is σ = 243525042. Its totient is φ = 243525040.

The previous prime is 243525019. The next prime is 243525043. The reversal of 243525041 is 140525342.

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., 141110641 + 102414400 = 11879^2 + 10120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243525041 is a prime.

Together with 243525043, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243525041.

It is not a weakly prime, because it can be changed into another prime (243525043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121762520 + 121762521.

It is an arithmetic number, because the mean of its divisors is an integer number (121762521).

Almost surely, 2^243525041 is an apocalyptic number.

It is an amenable number.

243525041 is a deficient number, since it is larger than the sum of its proper divisors (1).

243525041 is an equidigital number, since it uses as much as digits as its factorization.

243525041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 243525041 is about 15605.2888790948. The cubic root of 243525041 is about 624.4742595325.

The spelling of 243525041 in words is "two hundred forty-three million, five hundred twenty-five thousand, forty-one".