55385244 has 36 divisors (see below), whose sum is σ = 144831960. Its totient is φ = 17824800.

The previous prime is 55385243. The next prime is 55385249. The reversal of 55385244 is 44258355.

55385244 is a `hidden beast` number, since 553 + 85 + 24 + 4 = 666.

55385244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55385199 and 55385208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55385243) 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, 25482 + ... + 27569.

It is an arithmetic number, because the mean of its divisors is an integer number (4023110).

Almost surely, 2^55385244 is an apocalyptic number.

It is an amenable number.

55385244 is an abundant number, since it is smaller than the sum of its proper divisors (89446716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55385244 is a wasteful number, since it uses less digits than its factorization.

55385244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53090 (or 53085 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 55385244 is about 7442.1263090598. The cubic root of 55385244 is about 381.1810989345.

The spelling of 55385244 in words is "fifty-five million, three hundred eighty-five thousand, two hundred forty-four".