5561440441 has 2 divisors, whose sum is σ = 5561440442. Its totient is φ = 5561440440.

The previous prime is 5561440433. The next prime is 5561440471. The reversal of 5561440441 is 1440441655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2877786025 + 2683654416 = 53645^2 + 51804^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561440441 - 2³ = 5561440433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5561440397 and 5561440406.

It is not a weakly prime, because it can be changed into another prime (5561440471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780720220 + 2780720221.

It is an arithmetic number, because the mean of its divisors is an integer number (2780720221).

Almost surely, 2^5561440441 is an apocalyptic number.

It is an amenable number.

5561440441 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561440441 is an equidigital number, since it uses as much as digits as its factorization.

5561440441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 5561440441 is about 74575.0658129110. The cubic root of 5561440441 is about 1771.7227570177.

The spelling of 5561440441 in words is "five billion, five hundred sixty-one million, four hundred forty thousand, four hundred forty-one".