55688340 has 24 divisors (see below), whose sum is σ = 155927520. Its totient is φ = 14850208.

The previous prime is 55688333. The next prime is 55688351. The reversal of 55688340 is 4388655.

It is a happy number.

55688340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 464010 + ... + 464129.

It is an arithmetic number, because the mean of its divisors is an integer number (6496980).

Almost surely, 2^55688340 is an apocalyptic number.

It is an amenable number.

55688340 is an abundant number, since it is smaller than the sum of its proper divisors (100239180).

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

55688340 is a wasteful number, since it uses less digits than its factorization.

55688340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928151 (or 928149 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 55688340 is about 7462.4620602051. The cubic root of 55688340 is about 381.8751727958.

The spelling of 55688340 in words is "fifty-five million, six hundred eighty-eight thousand, three hundred forty".