55244449985 has 8 divisors (see below), whose sum is σ = 66471072360. Its totient is φ = 44077071744.

The previous prime is 55244449933. The next prime is 55244449987. The reversal of 55244449985 is 58994444255.

55244449985 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 4 ways, for example, as 49056016 + 55195393969 = 7004^2 + 234937^2 .

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 55244449985 - 2¹⁸ = 55244187841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55244449987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14808980 + ... + 14812709.

It is an arithmetic number, because the mean of its divisors is an integer number (8308884045).

Almost surely, 2^55244449985 is an apocalyptic number.

It is an amenable number.

55244449985 is a deficient number, since it is larger than the sum of its proper divisors (11226622375).

55244449985 is a wasteful number, since it uses less digits than its factorization.

55244449985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29622067.

The product of its digits is 41472000, while the sum is 59.

The spelling of 55244449985 in words is "fifty-five billion, two hundred forty-four million, four hundred forty-nine thousand, nine hundred eighty-five".