247508563 has 2 divisors, whose sum is σ = 247508564. Its totient is φ = 247508562.

The previous prime is 247508561. The next prime is 247508579. The reversal of 247508563 is 365805742.

247508563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247508563 - 2¹ = 247508561 is a prime.

It is a super-2 number, since 2×247508563² = 122520977516649938, which contains 22 as substring.

Together with 247508561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (247508561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123754281 + 123754282.

It is an arithmetic number, because the mean of its divisors is an integer number (123754282).

Almost surely, 2^247508563 is an apocalyptic number.

247508563 is a deficient number, since it is larger than the sum of its proper divisors (1).

247508563 is an equidigital number, since it uses as much as digits as its factorization.

247508563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 247508563 is about 15732.4048702034. The cubic root of 247508563 is about 627.8608585607.

The spelling of 247508563 in words is "two hundred forty-seven million, five hundred eight thousand, five hundred sixty-three".