245505563 has 2 divisors, whose sum is σ = 245505564. Its totient is φ = 245505562.

The previous prime is 245505527. The next prime is 245505571. The reversal of 245505563 is 365505542.

245505563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245505563 - 2⁸ = 245505307 is a prime.

It is not a weakly prime, because it can be changed into another prime (245505583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122752781 + 122752782.

It is an arithmetic number, because the mean of its divisors is an integer number (122752782).

Almost surely, 2^245505563 is an apocalyptic number.

245505563 is a deficient number, since it is larger than the sum of its proper divisors (1).

245505563 is an equidigital number, since it uses as much as digits as its factorization.

245505563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 245505563 is about 15668.6171374503. The cubic root of 245505563 is about 626.1625831930.

The spelling of 245505563 in words is "two hundred forty-five million, five hundred five thousand, five hundred sixty-three".