5204561 has 4 divisors (see below), whose sum is σ = 5211492. Its totient is φ = 5197632.

The previous prime is 5204557. The next prime is 5204603. The reversal of 5204561 is 1654025.

5204561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4774225 + 430336 = 2185^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 5204561 - 2² = 5204557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5204501) 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, 2180 + ... + 3893.

It is an arithmetic number, because the mean of its divisors is an integer number (1302873).

Almost surely, 2^5204561 is an apocalyptic number.

It is an amenable number.

5204561 is a deficient number, since it is larger than the sum of its proper divisors (6931).

5204561 is an equidigital number, since it uses as much as digits as its factorization.

5204561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5204561 is about 2281.3506964077. The cubic root of 5204561 is about 173.2984590424.

Adding to 5204561 its reverse (1654025), we get a palindrome (6858586).

The spelling of 5204561 in words is "five million, two hundred four thousand, five hundred sixty-one".