5561441 has 2 divisors, whose sum is σ = 5561442. Its totient is φ = 5561440.

The previous prime is 5561429. The next prime is 5561443. The reversal of 5561441 is 1441655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5290000 + 271441 = 2300^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561441 - 2²² = 1367137 is a prime.

It is a Sophie Germain prime.

Together with 5561443, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5561441.

It is not a weakly prime, because it can be changed into another prime (5561443) 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, 2780720 + 2780721.

It is an arithmetic number, because the mean of its divisors is an integer number (2780721).

Almost surely, 2^5561441 is an apocalyptic number.

It is an amenable number.

5561441 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561441 is an equidigital number, since it uses as much as digits as its factorization.

5561441 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 5561441 is about 2358.2707647766. The cubic root of 5561441 is about 177.1722816378.

It can be divided in two parts, 55614 and 41, that added together give a palindrome (55655).

The spelling of 5561441 in words is "five million, five hundred sixty-one thousand, four hundred forty-one".