5820561 has 18 divisors (see below), whose sum is σ = 8718710. Its totient is φ = 3741696.

The previous prime is 5820553. The next prime is 5820569. The reversal of 5820561 is 1650285.

5820561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5820553) and next prime (5820569).

It can be written as a sum of positive squares in 3 ways, for example, as 731025 + 5089536 = 855^2 + 2256^2 .

It is not a de Polignac number, because 5820561 - 2³ = 5820553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5820569) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7185 + ... + 7953.

Almost surely, 2^5820561 is an apocalyptic number.

It is an amenable number.

5820561 is a deficient number, since it is larger than the sum of its proper divisors (2898149).

5820561 is a wasteful number, since it uses less digits than its factorization.

5820561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5820561 is about 2412.5838845520. The cubic root of 5820561 is about 179.8822377875.

The spelling of 5820561 in words is "five million, eight hundred twenty thousand, five hundred sixty-one".