4504561 has 2 divisors, whose sum is σ = 4504562. Its totient is φ = 4504560.

The previous prime is 4504559. The next prime is 4504571. The reversal of 4504561 is 1654054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4490161 + 14400 = 2119^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 4504561 - 2¹ = 4504559 is a prime.

Together with 4504559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4504571) 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 as a sum of consecutive naturals, namely, 2252280 + 2252281.

It is an arithmetic number, because the mean of its divisors is an integer number (2252281).

Almost surely, 2^4504561 is an apocalyptic number.

It is an amenable number.

4504561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4504561 is an equidigital number, since it uses as much as digits as its factorization.

4504561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4504561 is about 2122.3951093046. The cubic root of 4504561 is about 165.1521217224.

The spelling of 4504561 in words is "four million, five hundred four thousand, five hundred sixty-one".