563278943 has 4 divisors (see below), whose sum is σ = 563346168. Its totient is φ = 563211720.

The previous prime is 563278913. The next prime is 563278999. The reversal of 563278943 is 349872365.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 563278943 - 2¹⁴ = 563262559 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563278913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18896 + ... + 38517.

It is an arithmetic number, because the mean of its divisors is an integer number (140836542).

Almost surely, 2^563278943 is an apocalyptic number.

563278943 is a deficient number, since it is larger than the sum of its proper divisors (67225).

563278943 is an equidigital number, since it uses as much as digits as its factorization.

563278943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67224.

The product of its digits is 1088640, while the sum is 47.

The square root of 563278943 is about 23733.4983304190. The cubic root of 563278943 is about 825.8626754531.

The spelling of 563278943 in words is "five hundred sixty-three million, two hundred seventy-eight thousand, nine hundred forty-three".