55943689 has 8 divisors (see below), whose sum is σ = 56548800. Its totient is φ = 55341936.

The previous prime is 55943663. The next prime is 55943707. The reversal of 55943689 is 98634955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55943689 - 2⁹ = 55943177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55944689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45132 + ... + 46354.

It is an arithmetic number, because the mean of its divisors is an integer number (7068600).

Almost surely, 2^55943689 is an apocalyptic number.

It is an amenable number.

55943689 is a deficient number, since it is larger than the sum of its proper divisors (605111).

55943689 is a wasteful number, since it uses less digits than its factorization.

55943689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its digits is 1166400, while the sum is 49.

The square root of 55943689 is about 7479.5513902907. The cubic root of 55943689 is about 382.4579565619.

The spelling of 55943689 in words is "fifty-five million, nine hundred forty-three thousand, six hundred eighty-nine".