245051789 has 2 divisors, whose sum is σ = 245051790. Its totient is φ = 245051788.

The previous prime is 245051771. The next prime is 245051809. The reversal of 245051789 is 987150542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 33582025 = 14542^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 245051789 - 2⁸ = 245051533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245051689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122525894 + 122525895.

It is an arithmetic number, because the mean of its divisors is an integer number (122525895).

Almost surely, 2^245051789 is an apocalyptic number.

It is an amenable number.

245051789 is a deficient number, since it is larger than the sum of its proper divisors (1).

245051789 is an equidigital number, since it uses as much as digits as its factorization.

245051789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 245051789 is about 15654.1300940039. The cubic root of 245051789 is about 625.7765613377.

The spelling of 245051789 in words is "two hundred forty-five million, fifty-one thousand, seven hundred eighty-nine".