55891760 has 60 divisors (see below), whose sum is σ = 134460144. Its totient is φ = 21605760.

The previous prime is 55891751. The next prime is 55891783. The reversal of 55891760 is 6719855.

55891760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 76517 + ... + 77243.

Almost surely, 2^55891760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55891760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67230072).

55891760 is an abundant number, since it is smaller than the sum of its proper divisors (78568384).

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

55891760 is a wasteful number, since it uses less digits than its factorization.

55891760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 55891760 is about 7476.0791863115. The cubic root of 55891760 is about 382.3395827239.

The spelling of 55891760 in words is "fifty-five million, eight hundred ninety-one thousand, seven hundred sixty".