5451043121 has 2 divisors, whose sum is σ = 5451043122. Its totient is φ = 5451043120.

The previous prime is 5451043009. The next prime is 5451043141. The reversal of 5451043121 is 1213401545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5400633121 + 50410000 = 73489^2 + 7100^2 .

It is a cyclic number.

It is not a de Polignac number, because 5451043121 - 2¹⁰ = 5451042097 is a prime.

It is a super-2 number, since 2×5451043121² = 59427742214002841282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5451043141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725521560 + 2725521561.

It is an arithmetic number, because the mean of its divisors is an integer number (2725521561).

Almost surely, 2^5451043121 is an apocalyptic number.

It is an amenable number.

5451043121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451043121 is an equidigital number, since it uses as much as digits as its factorization.

5451043121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 5451043121 is about 73831.1798700251. The cubic root of 5451043121 is about 1759.9211312153.

Adding to 5451043121 its reverse (1213401545), we get a palindrome (6664444666).

The spelling of 5451043121 in words is "five billion, four hundred fifty-one million, forty-three thousand, one hundred twenty-one".