55843785 has 12 divisors (see below), whose sum is σ = 96795972. Its totient is φ = 29783328.

The previous prime is 55843783. The next prime is 55843789. The reversal of 55843785 is 58734855.

55843785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37491129 + 18352656 = 6123^2 + 4284^2 .

It is not a de Polignac number, because 55843785 - 2¹ = 55843783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1240973 = 55843785 / (5 + 5 + 8 + 4 + 3 + 7 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 55843785.

It is not an unprimeable number, because it can be changed into a prime (55843783) 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 11 ways as a sum of consecutive naturals, for example, 620442 + ... + 620531.

It is an arithmetic number, because the mean of its divisors is an integer number (8066331).

Almost surely, 2^55843785 is an apocalyptic number.

It is an amenable number.

55843785 is a deficient number, since it is larger than the sum of its proper divisors (40952187).

55843785 is a wasteful number, since it uses less digits than its factorization.

55843785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240984 (or 1240981 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 55843785 is about 7472.8699306224. The cubic root of 55843785 is about 382.2301569804.

The spelling of 55843785 in words is "fifty-five million, eight hundred forty-three thousand, seven hundred eighty-five".