42563855 has 4 divisors (see below), whose sum is σ = 51076632. Its totient is φ = 34051080.

The previous prime is 42563849. The next prime is 42563879. The reversal of 42563855 is 55836524.

42563855 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 42563855 - 2¹⁸ = 42301711 is a prime.

It is a super-2 number, since 2×42563855² = 3623363504922050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4256381 + ... + 4256390.

It is an arithmetic number, because the mean of its divisors is an integer number (12769158).

Almost surely, 2^42563855 is an apocalyptic number.

42563855 is a deficient number, since it is larger than the sum of its proper divisors (8512777).

42563855 is an equidigital number, since it uses as much as digits as its factorization.

42563855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8512776.

The product of its digits is 144000, while the sum is 38.

The square root of 42563855 is about 6524.0980219491. The cubic root of 42563855 is about 349.1512905803.

The spelling of 42563855 in words is "forty-two million, five hundred sixty-three thousand, eight hundred fifty-five".