5451028081 has 2 divisors, whose sum is σ = 5451028082. Its totient is φ = 5451028080.

The previous prime is 5451028049. The next prime is 5451028103. The reversal of 5451028081 is 1808201545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4240614400 + 1210413681 = 65120^2 + 34791^2 .

It is a cyclic number.

It is not a de Polignac number, because 5451028081 - 2⁵ = 5451028049 is a prime.

It is a super-2 number, since 2×5451028081² = 59427414279701085122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5451028001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725514040 + 2725514041.

It is an arithmetic number, because the mean of its divisors is an integer number (2725514041).

Almost surely, 2^5451028081 is an apocalyptic number.

It is an amenable number.

5451028081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451028081 is an equidigital number, since it uses as much as digits as its factorization.

5451028081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 5451028081 is about 73831.0780159683. The cubic root of 5451028081 is about 1759.9195126114.

The spelling of 5451028081 in words is "five billion, four hundred fifty-one million, twenty-eight thousand, eighty-one".