6455534581 has 16 divisors (see below), whose sum is σ = 6731112960. Its totient is φ = 6184488960.

The previous prime is 6455534551. The next prime is 6455534599. The reversal of 6455534581 is 1854355546.

It is a cyclic number.

It is not a de Polignac number, because 6455534581 - 2²³ = 6447145973 is a prime.

It is a super-2 number, since 2×6455534581² = 83347853452973691122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6455534521) 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, 1290421 + ... + 1295413.

It is an arithmetic number, because the mean of its divisors is an integer number (420694560).

Almost surely, 2^6455534581 is an apocalyptic number.

It is an amenable number.

6455534581 is a deficient number, since it is larger than the sum of its proper divisors (275578379).

6455534581 is a wasteful number, since it uses less digits than its factorization.

6455534581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5436.

The product of its digits is 1440000, while the sum is 46.

The square root of 6455534581 is about 80346.3414288417. The cubic root of 6455534581 is about 1861.9902561057.

The spelling of 6455534581 in words is "six billion, four hundred fifty-five million, five hundred thirty-four thousand, five hundred eighty-one".