55391841 has 6 divisors (see below), whose sum is σ = 80010450. Its totient is φ = 36927888.

The previous prime is 55391773. The next prime is 55391851. The reversal of 55391841 is 14819355.

55391841 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 only one way, i.e., 45279441 + 10112400 = 6729^2 + 3180^2 .

It is not a de Polignac number, because 55391841 - 2¹⁰ = 55390817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55391796 and 55391805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55391851) 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 5 ways as a sum of consecutive naturals, for example, 3077316 + ... + 3077333.

It is an arithmetic number, because the mean of its divisors is an integer number (13335075).

Almost surely, 2^55391841 is an apocalyptic number.

It is an amenable number.

55391841 is a deficient number, since it is larger than the sum of its proper divisors (24618609).

55391841 is a wasteful number, since it uses less digits than its factorization.

55391841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154655 (or 6154652 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 55391841 is about 7442.5695159669. The cubic root of 55391841 is about 381.1962326398.

The spelling of 55391841 in words is "fifty-five million, three hundred ninety-one thousand, eight hundred forty-one".