8105245 has 4 divisors (see below), whose sum is σ = 9726300. Its totient is φ = 6484192.

The previous prime is 8105231. The next prime is 8105261. The reversal of 8105245 is 5425018.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5861241 + 2244004 = 2421^2 + 1498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8105245 is a prime.

8105245 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810520 + ... + 810529.

It is an arithmetic number, because the mean of its divisors is an integer number (2431575).

Almost surely, 2^8105245 is an apocalyptic number.

It is an amenable number.

8105245 is a deficient number, since it is larger than the sum of its proper divisors (1621055).

8105245 is a wasteful number, since it uses less digits than its factorization.

8105245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621054.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 8105245 is about 2846.9711976063. The cubic root of 8105245 is about 200.8732235213.

The spelling of 8105245 in words is "eight million, one hundred five thousand, two hundred forty-five".