8242855 has 16 divisors (see below), whose sum is σ = 10399680. Its totient is φ = 6259968.

The previous prime is 8242849. The next prime is 8242859. The reversal of 8242855 is 5582428.

It is a cyclic number.

It is not a de Polignac number, because 8242855 - 2³ = 8242847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8242855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8242859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26179 + ... + 26491.

It is an arithmetic number, because the mean of its divisors is an integer number (649980).

Almost surely, 2^8242855 is an apocalyptic number.

8242855 is a deficient number, since it is larger than the sum of its proper divisors (2156825).

8242855 is a wasteful number, since it uses less digits than its factorization.

8242855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570.

The product of its digits is 25600, while the sum is 34.

The square root of 8242855 is about 2871.0372690023. The cubic root of 8242855 is about 202.0036515368.

The spelling of 8242855 in words is "eight million, two hundred forty-two thousand, eight hundred fifty-five".