245260243 has 2 divisors, whose sum is σ = 245260244. Its totient is φ = 245260242.

The previous prime is 245260193. The next prime is 245260289. The reversal of 245260243 is 342062542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245260243 is a prime.

It is not a weakly prime, because it can be changed into another prime (245260643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122630121 + 122630122.

It is an arithmetic number, because the mean of its divisors is an integer number (122630122).

Almost surely, 2^245260243 is an apocalyptic number.

245260243 is a deficient number, since it is larger than the sum of its proper divisors (1).

245260243 is an equidigital number, since it uses as much as digits as its factorization.

245260243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 245260243 is about 15660.7867937725. The cubic root of 245260243 is about 625.9539505845.

The spelling of 245260243 in words is "two hundred forty-five million, two hundred sixty thousand, two hundred forty-three".