245512447 has 2 divisors, whose sum is σ = 245512448. Its totient is φ = 245512446.

The previous prime is 245512441. The next prime is 245512459. The reversal of 245512447 is 744215542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245512447 - 2³ = 245512439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245512441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122756223 + 122756224.

It is an arithmetic number, because the mean of its divisors is an integer number (122756224).

Almost surely, 2^245512447 is an apocalyptic number.

245512447 is a deficient number, since it is larger than the sum of its proper divisors (1).

245512447 is an equidigital number, since it uses as much as digits as its factorization.

245512447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44800, while the sum is 34.

The square root of 245512447 is about 15668.8368106889. The cubic root of 245512447 is about 626.1684356916.

Adding to 245512447 its reverse (744215542), we get a palindrome (989727989).

The spelling of 245512447 in words is "two hundred forty-five million, five hundred twelve thousand, four hundred forty-seven".