245535439 has 2 divisors, whose sum is σ = 245535440. Its totient is φ = 245535438.

The previous prime is 245535391. The next prime is 245535467. The reversal of 245535439 is 934535542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245535439 - 2²¹ = 243438287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245535739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122767719 + 122767720.

It is an arithmetic number, because the mean of its divisors is an integer number (122767720).

Almost surely, 2^245535439 is an apocalyptic number.

245535439 is a deficient number, since it is larger than the sum of its proper divisors (1).

245535439 is an equidigital number, since it uses as much as digits as its factorization.

245535439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 40.

The square root of 245535439 is about 15669.5704791165. The cubic root of 245535439 is about 626.1879817682.

It can be divided in two parts, 24553 and 5439, that added together give a palindrome (29992).

The spelling of 245535439 in words is "two hundred forty-five million, five hundred thirty-five thousand, four hundred thirty-nine".