5554431121 has 2 divisors, whose sum is σ = 5554431122. Its totient is φ = 5554431120.

The previous prime is 5554431109. The next prime is 5554431143. The reversal of 5554431121 is 1211344555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3742992400 + 1811438721 = 61180^2 + 42561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5554431121 is a prime.

It is not a weakly prime, because it can be changed into another prime (5554431151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777215560 + 2777215561.

It is an arithmetic number, because the mean of its divisors is an integer number (2777215561).

Almost surely, 2^5554431121 is an apocalyptic number.

It is an amenable number.

5554431121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5554431121 is an equidigital number, since it uses as much as digits as its factorization.

5554431121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 31.

The square root of 5554431121 is about 74528.0559319777. The cubic root of 5554431121 is about 1770.9781182404.

Adding to 5554431121 its reverse (1211344555), we get a palindrome (6765775676).

The spelling of 5554431121 in words is "five billion, five hundred fifty-four million, four hundred thirty-one thousand, one hundred twenty-one".