6455534521 has 2 divisors, whose sum is σ = 6455534522. Its totient is φ = 6455534520.

The previous prime is 6455534509. The next prime is 6455534537. The reversal of 6455534521 is 1254355546.

6455534521 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., 5907459600 + 548074921 = 76860^2 + 23411^2 .

It is a cyclic number.

It is not a de Polignac number, because 6455534521 - 2⁵ = 6455534489 is a prime.

It is not a weakly prime, because it can be changed into another prime (6455534551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227767260 + 3227767261.

It is an arithmetic number, because the mean of its divisors is an integer number (3227767261).

Almost surely, 2^6455534521 is an apocalyptic number.

It is an amenable number.

6455534521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6455534521 is an equidigital number, since it uses as much as digits as its factorization.

6455534521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360000, while the sum is 40.

The square root of 6455534521 is about 80346.3410554582. The cubic root of 6455534521 is about 1861.9902503371.

The spelling of 6455534521 in words is "six billion, four hundred fifty-five million, five hundred thirty-four thousand, five hundred twenty-one".