55547647 has 4 divisors (see below), whose sum is σ = 55920600. Its totient is φ = 55174696.

The previous prime is 55547617. The next prime is 55547669. The reversal of 55547647 is 74674555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74674555 = 5 ⋅14934911.

It is a cyclic number.

It is not a de Polignac number, because 55547647 - 2⁷ = 55547519 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 (55547617) 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, 186253 + ... + 186550.

It is an arithmetic number, because the mean of its divisors is an integer number (13980150).

Almost surely, 2^55547647 is an apocalyptic number.

55547647 is a deficient number, since it is larger than the sum of its proper divisors (372953).

55547647 is a wasteful number, since it uses less digits than its factorization.

55547647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372952.

The product of its digits is 588000, while the sum is 43.

The square root of 55547647 is about 7453.0293840827. The cubic root of 55547647 is about 381.5533072529.

The spelling of 55547647 in words is "fifty-five million, five hundred forty-seven thousand, six hundred forty-seven".