245024789 has 2 divisors, whose sum is σ = 245024790. Its totient is φ = 245024788.

The previous prime is 245024753. The next prime is 245024803. The reversal of 245024789 is 987420542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123099025 + 121925764 = 11095^2 + 11042^2 .

It is a cyclic number.

It is not a de Polignac number, because 245024789 - 2¹² = 245020693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245024749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122512394 + 122512395.

It is an arithmetic number, because the mean of its divisors is an integer number (122512395).

Almost surely, 2^245024789 is an apocalyptic number.

It is an amenable number.

245024789 is a deficient number, since it is larger than the sum of its proper divisors (1).

245024789 is an equidigital number, since it uses as much as digits as its factorization.

245024789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 245024789 is about 15653.2676780281. The cubic root of 245024789 is about 625.7535776413.

The spelling of 245024789 in words is "two hundred forty-five million, twenty-four thousand, seven hundred eighty-nine".