245117863 has 2 divisors, whose sum is σ = 245117864. Its totient is φ = 245117862.

The previous prime is 245117861. The next prime is 245117881. The reversal of 245117863 is 368711542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245117863 - 2¹ = 245117861 is a prime.

Together with 245117861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245117861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122558931 + 122558932.

It is an arithmetic number, because the mean of its divisors is an integer number (122558932).

Almost surely, 2^245117863 is an apocalyptic number.

245117863 is a deficient number, since it is larger than the sum of its proper divisors (1).

245117863 is an equidigital number, since it uses as much as digits as its factorization.

245117863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 245117863 is about 15656.2403852266. The cubic root of 245117863 is about 625.8327995789.

The spelling of 245117863 in words is "two hundred forty-five million, one hundred seventeen thousand, eight hundred sixty-three".