6481559 has 4 divisors (see below), whose sum is σ = 7407504. Its totient is φ = 5555616.

The previous prime is 6481543. The next prime is 6481571. The reversal of 6481559 is 9551846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6481559 - 2⁴ = 6481543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481259) 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 3 ways as a sum of consecutive naturals, for example, 462962 + ... + 462975.

It is an arithmetic number, because the mean of its divisors is an integer number (1851876).

Almost surely, 2^6481559 is an apocalyptic number.

6481559 is a deficient number, since it is larger than the sum of its proper divisors (925945).

6481559 is an equidigital number, since it uses as much as digits as its factorization.

6481559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925944.

The product of its digits is 43200, while the sum is 38.

The square root of 6481559 is about 2545.8906103759. The cubic root of 6481559 is about 186.4489003173.

The spelling of 6481559 in words is "six million, four hundred eighty-one thousand, five hundred fifty-nine".