245289017 has 2 divisors, whose sum is σ = 245289018. Its totient is φ = 245289016.

The previous prime is 245288969. The next prime is 245289049. The reversal of 245289017 is 710982542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203091001 + 42198016 = 14251^2 + 6496^2 .

It is a cyclic number.

It is not a de Polignac number, because 245289017 - 2²⁶ = 178180153 is a prime.

It is not a weakly prime, because it can be changed into another prime (245289097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122644508 + 122644509.

It is an arithmetic number, because the mean of its divisors is an integer number (122644509).

Almost surely, 2^245289017 is an apocalyptic number.

It is an amenable number.

245289017 is a deficient number, since it is larger than the sum of its proper divisors (1).

245289017 is an equidigital number, since it uses as much as digits as its factorization.

245289017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 245289017 is about 15661.7054307633. The cubic root of 245289017 is about 625.9784286578.

The spelling of 245289017 in words is "two hundred forty-five million, two hundred eighty-nine thousand, seventeen".