5561381827 has 2 divisors, whose sum is σ = 5561381828. Its totient is φ = 5561381826.

The previous prime is 5561381797. The next prime is 5561381851. The reversal of 5561381827 is 7281831655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5561381827 is a prime.

It is a super-3 number, since 3×5561381827³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (5561381857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780690913 + 2780690914.

It is an arithmetic number, because the mean of its divisors is an integer number (2780690914).

Almost surely, 2^5561381827 is an apocalyptic number.

5561381827 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561381827 is an equidigital number, since it uses as much as digits as its factorization.

5561381827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 46.

The square root of 5561381827 is about 74574.6728252964. The cubic root of 5561381827 is about 1771.7165327236.

The spelling of 5561381827 in words is "five billion, five hundred sixty-one million, three hundred eighty-one thousand, eight hundred twenty-seven".