6558481 has 4 divisors (see below), whose sum is σ = 6944292. Its totient is φ = 6172672.

The previous prime is 6558479. The next prime is 6558491. The reversal of 6558481 is 1848556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5313025 + 1245456 = 2305^2 + 1116^2 .

It is a cyclic number.

It is not a de Polignac number, because 6558481 - 2¹ = 6558479 is a prime.

It is a super-2 number, since 2×6558481² = 86027346054722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

6558481 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6558481.

It is not an unprimeable number, because it can be changed into a prime (6558491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192880 + ... + 192913.

It is an arithmetic number, because the mean of its divisors is an integer number (1736073).

Almost surely, 2^6558481 is an apocalyptic number.

It is an amenable number.

6558481 is a deficient number, since it is larger than the sum of its proper divisors (385811).

6558481 is a wasteful number, since it uses less digits than its factorization.

6558481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385810.

The product of its digits is 38400, while the sum is 37.

The square root of 6558481 is about 2560.9531428747. The cubic root of 6558481 is about 187.1835824749.

The spelling of 6558481 in words is "six million, five hundred fifty-eight thousand, four hundred eighty-one".