55691760 has 40 divisors (see below), whose sum is σ = 172645200. Its totient is φ = 14851072.

The previous prime is 55691759. The next prime is 55691789. The reversal of 55691760 is 6719655.

55691760 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 (40).

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, 115785 + ... + 116264.

It is an arithmetic number, because the mean of its divisors is an integer number (4316130).

Almost surely, 2^55691760 is an apocalyptic number.

It is an amenable number.

55691760 is an abundant number, since it is smaller than the sum of its proper divisors (116953440).

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

55691760 is a wasteful number, since it uses less digits than its factorization.

55691760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232065 (or 232059 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 55691760 is about 7462.6912035806. The cubic root of 55691760 is about 381.8829900298.

The spelling of 55691760 in words is "fifty-five million, six hundred ninety-one thousand, seven hundred sixty".