6530881 has 4 divisors (see below), whose sum is σ = 7463872. Its totient is φ = 5597892.

The previous prime is 6530879. The next prime is 6530891. The reversal of 6530881 is 1880356.

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 6530881 - 2¹ = 6530879 is a prime.

It is a super-3 number, since 3×6530881³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

6530881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6530831) 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, 466485 + ... + 466498.

It is an arithmetic number, because the mean of its divisors is an integer number (1865968).

Almost surely, 2^6530881 is an apocalyptic number.

It is an amenable number.

6530881 is a deficient number, since it is larger than the sum of its proper divisors (932991).

6530881 is an equidigital number, since it uses as much as digits as its factorization.

6530881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932990.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 6530881 is about 2555.5588429931. The cubic root of 6530881 is about 186.9206389204.

The spelling of 6530881 in words is "six million, five hundred thirty thousand, eight hundred eighty-one".