5671561249 has 2 divisors, whose sum is σ = 5671561250. Its totient is φ = 5671561248.

The previous prime is 5671561213. The next prime is 5671561271. The reversal of 5671561249 is 9421651765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5260891024 + 410670225 = 72532^2 + 20265^2 .

It is a cyclic number.

It is not a de Polignac number, because 5671561249 - 2⁹ = 5671560737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5671561199 and 5671561208.

It is not a weakly prime, because it can be changed into another prime (5671561289) 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, 2835780624 + 2835780625.

It is an arithmetic number, because the mean of its divisors is an integer number (2835780625).

Almost surely, 2^5671561249 is an apocalyptic number.

It is an amenable number.

5671561249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5671561249 is an equidigital number, since it uses as much as digits as its factorization.

5671561249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The square root of 5671561249 is about 75309.7686160302. The cubic root of 5671561249 is about 1783.3402382202.

The spelling of 5671561249 in words is "five billion, six hundred seventy-one million, five hundred sixty-one thousand, two hundred forty-nine".