55855843 has 4 divisors (see below), whose sum is σ = 55899448. Its totient is φ = 55812240.

The previous prime is 55855759. The next prime is 55855853. The reversal of 55855843 is 34855855.

55855843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55855843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55855843.

It is not an unprimeable number, because it can be changed into a prime (55855853) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19821 + ... + 22462.

It is an arithmetic number, because the mean of its divisors is an integer number (13974862).

Almost surely, 2^55855843 is an apocalyptic number.

55855843 is a deficient number, since it is larger than the sum of its proper divisors (43605).

55855843 is a wasteful number, since it uses less digits than its factorization.

55855843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43604.

The product of its digits is 480000, while the sum is 43.

The square root of 55855843 is about 7473.6766721608. The cubic root of 55855843 is about 382.2576658581.

The spelling of 55855843 in words is "fifty-five million, eight hundred fifty-five thousand, eight hundred forty-three".