245260289 has 2 divisors, whose sum is σ = 245260290. Its totient is φ = 245260288.

The previous prime is 245260243. The next prime is 245260291. The reversal of 245260289 is 982062542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207129664 + 38130625 = 14392^2 + 6175^2 .

It is a cyclic number.

It is not a de Polignac number, because 245260289 - 2⁸ = 245260033 is a prime.

It is a Sophie Germain prime.

Together with 245260291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (245260489) 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, 122630144 + 122630145.

It is an arithmetic number, because the mean of its divisors is an integer number (122630145).

Almost surely, 2^245260289 is an apocalyptic number.

It is an amenable number.

245260289 is a deficient number, since it is larger than the sum of its proper divisors (1).

245260289 is an equidigital number, since it uses as much as digits as its factorization.

245260289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 245260289 is about 15660.7882624088. The cubic root of 245260289 is about 625.9539897182.

The spelling of 245260289 in words is "two hundred forty-five million, two hundred sixty thousand, two hundred eighty-nine".