6553556487 has 12 divisors (see below), whose sum is σ = 9466968160. Its totient is φ = 4368705408.

The previous prime is 6553556483. The next prime is 6553556507. The reversal of 6553556487 is 7846553556.

It is a happy number.

6553556487 is a `hidden beast` number, since 6 + 5 + 5 + 3 + 556 + 4 + 87 = 666.

It is not a de Polignac number, because 6553556487 - 2² = 6553556483 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 (6553556483) 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 11 ways as a sum of consecutive naturals, for example, 176439 + ... + 210327.

Almost surely, 2^6553556487 is an apocalyptic number.

6553556487 is a deficient number, since it is larger than the sum of its proper divisors (2913411673).

6553556487 is a wasteful number, since it uses less digits than its factorization.

6553556487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55382 (or 55379 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The square root of 6553556487 is about 80954.0393494976. The cubic root of 6553556487 is about 1871.3672107549.

The spelling of 6553556487 in words is "six billion, five hundred fifty-three million, five hundred fifty-six thousand, four hundred eighty-seven".