245530639 has 2 divisors, whose sum is σ = 245530640. Its totient is φ = 245530638.

The previous prime is 245530627. The next prime is 245530651. The reversal of 245530639 is 936035542.

It is a balanced prime because it is at equal distance from previous prime (245530627) and next prime (245530651).

It is a cyclic number.

It is not a de Polignac number, because 245530639 - 2⁹ = 245530127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245530598 and 245530607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245530669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122765319 + 122765320.

It is an arithmetic number, because the mean of its divisors is an integer number (122765320).

Almost surely, 2^245530639 is an apocalyptic number.

245530639 is a deficient number, since it is larger than the sum of its proper divisors (1).

245530639 is an equidigital number, since it uses as much as digits as its factorization.

245530639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 245530639 is about 15669.4173152673. The cubic root of 245530639 is about 626.1839012685.

The spelling of 245530639 in words is "two hundred forty-five million, five hundred thirty thousand, six hundred thirty-nine".