4505813 has 4 divisors (see below), whose sum is σ = 4852428. Its totient is φ = 4159200.

The previous prime is 4505807. The next prime is 4505849. The reversal of 4505813 is 3185054.

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 2365444 + 2140369 = 1538^2 + 1463^2 .

It is a cyclic number.

It is not a de Polignac number, because 4505813 - 2⁴ = 4505797 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4505863) 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, 173288 + ... + 173313.

It is an arithmetic number, because the mean of its divisors is an integer number (1213107).

Almost surely, 2^4505813 is an apocalyptic number.

It is an amenable number.

4505813 is a deficient number, since it is larger than the sum of its proper divisors (346615).

4505813 is a wasteful number, since it uses less digits than its factorization.

4505813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346614.

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

The square root of 4505813 is about 2122.6900386067. The cubic root of 4505813 is about 165.1674211269.

The spelling of 4505813 in words is "four million, five hundred five thousand, eight hundred thirteen".