857214563 has 2 divisors, whose sum is σ = 857214564. Its totient is φ = 857214562.

The previous prime is 857214539. The next prime is 857214581. The reversal of 857214563 is 365412758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 857214563 - 2¹⁴ = 857198179 is a prime.

It is a Sophie Germain prime.

It is equal to p_43932596 and since 857214563 and 43932596 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 857214563.

It is not a weakly prime, because it can be changed into another prime (857217563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428607281 + 428607282.

It is an arithmetic number, because the mean of its divisors is an integer number (428607282).

Almost surely, 2^857214563 is an apocalyptic number.

857214563 is a deficient number, since it is larger than the sum of its proper divisors (1).

857214563 is an equidigital number, since it uses as much as digits as its factorization.

857214563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 857214563 is about 29278.2267734916. The cubic root of 857214563 is about 949.9407397938.

The spelling of 857214563 in words is "eight hundred fifty-seven million, two hundred fourteen thousand, five hundred sixty-three".