5205845 has 4 divisors (see below), whose sum is σ = 6247020. Its totient is φ = 4164672.

The previous prime is 5205839. The next prime is 5205853. The reversal of 5205845 is 5485025.

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 2961841 + 2244004 = 1721^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 5205845 - 2¹⁰ = 5204821 is a prime.

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, 520580 + ... + 520589.

It is an arithmetic number, because the mean of its divisors is an integer number (1561755).

Almost surely, 2^5205845 is an apocalyptic number.

It is an amenable number.

5205845 is a deficient number, since it is larger than the sum of its proper divisors (1041175).

5205845 is a wasteful number, since it uses less digits than its factorization.

5205845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041174.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 5205845 is about 2281.6320912890. The cubic root of 5205845 is about 173.3127091668.

The spelling of 5205845 in words is "five million, two hundred five thousand, eight hundred forty-five".