4541561 has 2 divisors, whose sum is σ = 4541562. Its totient is φ = 4541560.

The previous prime is 4541521. The next prime is 4541573. The reversal of 4541561 is 1651454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4541161 + 400 = 2131^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 4541561 - 2⁶ = 4541497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4541561.

It is not a weakly prime, because it can be changed into another prime (4541501) 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 as a sum of consecutive naturals, namely, 2270780 + 2270781.

It is an arithmetic number, because the mean of its divisors is an integer number (2270781).

Almost surely, 2^4541561 is an apocalyptic number.

It is an amenable number.

4541561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4541561 is an equidigital number, since it uses as much as digits as its factorization.

4541561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 4541561 is about 2131.0938505847. The cubic root of 4541561 is about 165.6030701236.

The spelling of 4541561 in words is "four million, five hundred forty-one thousand, five hundred sixty-one".