6455253321 has 18 divisors (see below), whose sum is σ = 10248976010. Its totient is φ = 3912274080.

The previous prime is 6455253317. The next prime is 6455253373. The reversal of 6455253321 is 1233525546.

6455253321 is a `hidden beast` number, since 645 + 5 + 2 + 5 + 3 + 3 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6377619600 + 77633721 = 79860^2 + 8811^2 .

It is not a de Polignac number, because 6455253321 - 2² = 6455253317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6455213321) 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 in 17 ways as a sum of consecutive naturals, for example, 2962756 + ... + 2964933.

Almost surely, 2^6455253321 is an apocalyptic number.

It is an amenable number.

6455253321 is a deficient number, since it is larger than the sum of its proper divisors (3793722689).

6455253321 is a wasteful number, since it uses less digits than its factorization.

6455253321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5927717 (or 5927703 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 6455253321 is about 80344.5911122833. The cubic root of 6455253321 is about 1861.9632141426.

Adding to 6455253321 its reverse (1233525546), we get a palindrome (7688778867).

It can be divided in two parts, 645525 and 3321, that added together give a palindrome (648846).

The spelling of 6455253321 in words is "six billion, four hundred fifty-five million, two hundred fifty-three thousand, three hundred twenty-one".