6455045521 has 4 divisors (see below), whose sum is σ = 6551389552. Its totient is φ = 6358701492.

The previous prime is 6455045507. The next prime is 6455045543. The reversal of 6455045521 is 1255405546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6455045521 - 2⁷ = 6455045393 is a prime.

It is a super-2 number, since 2×6455045521² = 83335225356364322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6455045501) 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 in 3 ways as a sum of consecutive naturals, for example, 48171915 + ... + 48172048.

It is an arithmetic number, because the mean of its divisors is an integer number (1637847388).

Almost surely, 2^6455045521 is an apocalyptic number.

It is an amenable number.

6455045521 is a deficient number, since it is larger than the sum of its proper divisors (96344031).

6455045521 is an equidigital number, since it uses as much as digits as its factorization.

6455045521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96344030.

The product of its (nonzero) digits is 120000, while the sum is 37.

The square root of 6455045521 is about 80343.2979221042. The cubic root of 6455045521 is about 1861.9432345441.

The spelling of 6455045521 in words is "six billion, four hundred fifty-five million, forty-five thousand, five hundred twenty-one".