8255813 has 4 divisors (see below), whose sum is σ = 8261568. Its totient is φ = 8250060.

The previous prime is 8255803. The next prime is 8255831. The reversal of 8255813 is 3185528.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8255813 - 2¹² = 8251717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8255813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8255803) 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, 1220 + ... + 4242.

It is an arithmetic number, because the mean of its divisors is an integer number (2065392).

Almost surely, 2^8255813 is an apocalyptic number.

It is an amenable number.

8255813 is a deficient number, since it is larger than the sum of its proper divisors (5755).

8255813 is a wasteful number, since it uses less digits than its factorization.

8255813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5754.

The product of its digits is 9600, while the sum is 32.

The square root of 8255813 is about 2873.2930584958. The cubic root of 8255813 is about 202.1094479259.

The spelling of 8255813 in words is "eight million, two hundred fifty-five thousand, eight hundred thirteen".