563855 has 4 divisors (see below), whose sum is σ = 676632. Its totient is φ = 451080.

The previous prime is 563851. The next prime is 563869. The reversal of 563855 is 558365.

563855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 563855 - 2² = 563851 is a prime.

It is a super-2 number, since 2×563855² = 635864922050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563851) 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, 56381 + ... + 56390.

It is an arithmetic number, because the mean of its divisors is an integer number (169158).

2⁵⁶³⁸⁵⁵ is an apocalyptic number.

563855 is a deficient number, since it is larger than the sum of its proper divisors (112777).

563855 is a wasteful number, since it uses less digits than its factorization.

563855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112776.

The product of its digits is 18000, while the sum is 32.

The square root of 563855 is about 750.9027899802. The cubic root of 563855 is about 82.6144112028.

The spelling of 563855 in words is "five hundred sixty-three thousand, eight hundred fifty-five".