5805561 has 8 divisors (see below), whose sum is σ = 7752384. Its totient is φ = 3864560.

The previous prime is 5805529. The next prime is 5805577. The reversal of 5805561 is 1655085.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5805561 - 2⁵ = 5805529 is a prime.

5805561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5805511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2155 + ... + 4031.

It is an arithmetic number, because the mean of its divisors is an integer number (969048).

Almost surely, 2^5805561 is an apocalyptic number.

It is an amenable number.

5805561 is a deficient number, since it is larger than the sum of its proper divisors (1946823).

5805561 is a wasteful number, since it uses less digits than its factorization.

5805561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 5805561 is about 2409.4731789335. The cubic root of 5805561 is about 179.7275817479.

The spelling of 5805561 in words is "five million, eight hundred five thousand, five hundred sixty-one".