245105563 has 2 divisors, whose sum is σ = 245105564. Its totient is φ = 245105562.

The previous prime is 245105551. The next prime is 245105573. The reversal of 245105563 is 365501542.

245105563 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 245105563 - 2⁹ = 245105051 is a prime.

It is not a weakly prime, because it can be changed into another prime (245105513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122552781 + 122552782.

It is an arithmetic number, because the mean of its divisors is an integer number (122552782).

Almost surely, 2^245105563 is an apocalyptic number.

245105563 is a deficient number, since it is larger than the sum of its proper divisors (1).

245105563 is an equidigital number, since it uses as much as digits as its factorization.

245105563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 245105563 is about 15655.8475656861. The cubic root of 245105563 is about 625.8223313194.

The spelling of 245105563 in words is "two hundred forty-five million, one hundred five thousand, five hundred sixty-three".