6530221455 has 16 divisors (see below), whose sum is σ = 10785398784. Its totient is φ = 3370436640.

The previous prime is 6530221381. The next prime is 6530221457. The reversal of 6530221455 is 5541220356.

It is not a de Polignac number, because 6530221455 - 2⁹ = 6530220943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6530221457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7021279 + ... + 7022208.

It is an arithmetic number, because the mean of its divisors is an integer number (674087424).

Almost surely, 2^6530221455 is an apocalyptic number.

6530221455 is a deficient number, since it is larger than the sum of its proper divisors (4255177329).

6530221455 is a wasteful number, since it uses less digits than its factorization.

6530221455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14043526.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 6530221455 is about 80809.7856388693. The cubic root of 6530221455 is about 1869.1434641951.

The spelling of 6530221455 in words is "six billion, five hundred thirty million, two hundred twenty-one thousand, four hundred fifty-five".