55447773 has 8 divisors (see below), whose sum is σ = 73967136. Its totient is φ = 36946800.

The previous prime is 55447771. The next prime is 55447781. The reversal of 55447773 is 37774455.

55447773 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 not a de Polignac number, because 55447773 - 2¹ = 55447771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55447771) 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 7 ways as a sum of consecutive naturals, for example, 5803 + ... + 12023.

It is an arithmetic number, because the mean of its divisors is an integer number (9245892).

Almost surely, 2^55447773 is an apocalyptic number.

It is an amenable number.

55447773 is a deficient number, since it is larger than the sum of its proper divisors (18519363).

55447773 is a wasteful number, since it uses less digits than its factorization.

55447773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9195.

The product of its digits is 411600, while the sum is 42.

The square root of 55447773 is about 7446.3261411249. The cubic root of 55447773 is about 381.3244939805.

The spelling of 55447773 in words is "fifty-five million, four hundred forty-seven thousand, seven hundred seventy-three".