55424385 has 16 divisors (see below), whose sum is σ = 98532480. Its totient is φ = 29559600.

The previous prime is 55424381. The next prime is 55424393. The reversal of 55424385 is 58342455.

55424385 is a `hidden beast` number, since 554 + 24 + 3 + 85 = 666.

55424385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55424385 - 2² = 55424381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55424381) 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 15 ways as a sum of consecutive naturals, for example, 205141 + ... + 205410.

It is an arithmetic number, because the mean of its divisors is an integer number (6158280).

Almost surely, 2^55424385 is an apocalyptic number.

It is an amenable number.

55424385 is a deficient number, since it is larger than the sum of its proper divisors (43108095).

55424385 is a wasteful number, since it uses less digits than its factorization.

55424385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410565 (or 410559 counting only the distinct ones).

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

The square root of 55424385 is about 7444.7555366177. The cubic root of 55424385 is about 381.2708719201.

The spelling of 55424385 in words is "fifty-five million, four hundred twenty-four thousand, three hundred eighty-five".