5489731561 has 2 divisors, whose sum is σ = 5489731562. Its totient is φ = 5489731560.

The previous prime is 5489731543. The next prime is 5489731589. The reversal of 5489731561 is 1651379845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3780405225 + 1709326336 = 61485^2 + 41344^2 .

It is a cyclic number.

It is not a de Polignac number, because 5489731561 - 2¹⁵ = 5489698793 is a prime.

It is a super-2 number, since 2×5489731561² = 60274305223678993442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5489731501) 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, 2744865780 + 2744865781.

It is an arithmetic number, because the mean of its divisors is an integer number (2744865781).

Almost surely, 2^5489731561 is an apocalyptic number.

It is an amenable number.

5489731561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5489731561 is an equidigital number, since it uses as much as digits as its factorization.

5489731561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 49.

The square root of 5489731561 is about 74092.7227263245. The cubic root of 5489731561 is about 1764.0749631135.

The spelling of 5489731561 in words is "five billion, four hundred eighty-nine million, seven hundred thirty-one thousand, five hundred sixty-one".