8213255 has 8 divisors (see below), whose sum is σ = 9879072. Its totient is φ = 6555168.

The previous prime is 8213221. The next prime is 8213267. The reversal of 8213255 is 5523128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8213255 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 749 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (1234884).

Almost surely, 2^8213255 is an apocalyptic number.

8213255 is a deficient number, since it is larger than the sum of its proper divisors (1665817).

8213255 is a wasteful number, since it uses less digits than its factorization.

8213255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865.

The product of its digits is 2400, while the sum is 26.

The square root of 8213255 is about 2865.8777015079. The cubic root of 8213255 is about 201.7615639103.

The spelling of 8213255 in words is "eight million, two hundred thirteen thousand, two hundred fifty-five".