5641813 has 4 divisors (see below), whose sum is σ = 5679328. Its totient is φ = 5604300.

The previous prime is 5641793. The next prime is 5641819. The reversal of 5641813 is 3181465.

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.

It is a cyclic number.

It is not a de Polignac number, because 5641813 - 2⁵ = 5641781 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5641819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18531 + ... + 18832.

It is an arithmetic number, because the mean of its divisors is an integer number (1419832).

Almost surely, 2^5641813 is an apocalyptic number.

It is an amenable number.

5641813 is a deficient number, since it is larger than the sum of its proper divisors (37515).

5641813 is a wasteful number, since it uses less digits than its factorization.

5641813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37514.

The product of its digits is 2880, while the sum is 28.

The square root of 5641813 is about 2375.2500920956. The cubic root of 5641813 is about 178.0216802276.

The spelling of 5641813 in words is "five million, six hundred forty-one thousand, eight hundred thirteen".