55563647 has 4 divisors (see below), whose sum is σ = 55610016. Its totient is φ = 55517280.

The previous prime is 55563589. The next prime is 55563671. The reversal of 55563647 is 74636555.

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 55563647 - 2⁶ = 55563583 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 (55563047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21338 + ... + 23799.

It is an arithmetic number, because the mean of its divisors is an integer number (13902504).

Almost surely, 2^55563647 is an apocalyptic number.

55563647 is a deficient number, since it is larger than the sum of its proper divisors (46369).

55563647 is a wasteful number, since it uses less digits than its factorization.

55563647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46368.

The product of its digits is 378000, while the sum is 41.

The square root of 55563647 is about 7454.1026958313. The cubic root of 55563647 is about 381.5899380686.

The spelling of 55563647 in words is "fifty-five million, five hundred sixty-three thousand, six hundred forty-seven".