4506821281 has 2 divisors, whose sum is σ = 4506821282. Its totient is φ = 4506821280.

The previous prime is 4506821251. The next prime is 4506821321. The reversal of 4506821281 is 1821286054.

4506821281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4416267025 + 90554256 = 66455^2 + 9516^2 .

It is a cyclic number.

It is not a de Polignac number, because 4506821281 - 2¹⁵ = 4506788513 is a prime.

It is a super-2 number, since 2×4506821281² = 40622876117748961922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4506821281.

It is not a weakly prime, because it can be changed into another prime (4506821251) 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, 2253410640 + 2253410641.

It is an arithmetic number, because the mean of its divisors is an integer number (2253410641).

Almost surely, 2^4506821281 is an apocalyptic number.

It is an amenable number.

4506821281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4506821281 is an equidigital number, since it uses as much as digits as its factorization.

4506821281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 4506821281 is about 67132.8628988813. The cubic root of 4506821281 is about 1651.7974023202.

The spelling of 4506821281 in words is "four billion, five hundred six million, eight hundred twenty-one thousand, two hundred eighty-one".