55717760 has 64 divisors (see below), whose sum is σ = 152241120. Its totient is φ = 19101696.

The previous prime is 55717679. The next prime is 55717769. The reversal of 55717760 is 6771755.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55717769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1739 + ... + 10698.

Almost surely, 2^55717760 is an apocalyptic number.

It is an amenable number.

55717760 is an abundant number, since it is smaller than the sum of its proper divisors (96523360).

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

55717760 is a wasteful number, since it uses less digits than its factorization.

55717760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12463 (or 12451 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 55717760 is about 7464.4329992304. The cubic root of 55717760 is about 381.9424088320.

It can be divided in two parts, 5571 and 7760, that added together give a palindrome (13331).

The spelling of 55717760 in words is "fifty-five million, seven hundred seventeen thousand, seven hundred sixty".