55717660 has 24 divisors (see below), whose sum is σ = 118169856. Its totient is φ = 22065600.

The previous prime is 55717657. The next prime is 55717667. The reversal of 55717660 is 6671755.

55717660 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 not an unprimeable number, because it can be changed into a prime (55717667) 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, 11772 + ... + 15811.

It is an arithmetic number, because the mean of its divisors is an integer number (4923744).

Almost surely, 2^55717660 is an apocalyptic number.

It is an amenable number.

55717660 is an abundant number, since it is smaller than the sum of its proper divisors (62452196).

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

55717660 is a wasteful number, since it uses less digits than its factorization.

55717660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27693 (or 27691 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 55717660 is about 7464.4263007950. The cubic root of 55717660 is about 381.9421803336.

It can be divided in two parts, 5571 and 7660, that added together give a palindrome (13231).

The spelling of 55717660 in words is "fifty-five million, seven hundred seventeen thousand, six hundred sixty".