55643755 has 8 divisors (see below), whose sum is σ = 66972672. Its totient is φ = 44381568.

The previous prime is 55643747. The next prime is 55643801. The reversal of 55643755 is 55734655.

55643755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55643755 - 2³ = 55643747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14827 + ... + 18196.

It is an arithmetic number, because the mean of its divisors is an integer number (8371584).

Almost surely, 2^55643755 is an apocalyptic number.

55643755 is a deficient number, since it is larger than the sum of its proper divisors (11328917).

55643755 is a wasteful number, since it uses less digits than its factorization.

55643755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33365.

The product of its digits is 315000, while the sum is 40.

The square root of 55643755 is about 7459.4741771790. The cubic root of 55643755 is about 381.7732337403.

The spelling of 55643755 in words is "fifty-five million, six hundred forty-three thousand, seven hundred fifty-five".