55889680 has 160 divisors (see below), whose sum is σ = 166560768. Its totient is φ = 16934400.

The previous prime is 55889677. The next prime is 55889689. The reversal of 55889680 is 8698855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55889689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264775 + ... + 264985.

Almost surely, 2^55889680 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 55889680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83280384).

55889680 is an abundant number, since it is smaller than the sum of its proper divisors (110671088).

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

55889680 is a wasteful number, since it uses less digits than its factorization.

55889680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 49.

The square root of 55889680 is about 7475.9400746662. The cubic root of 55889680 is about 382.3348397696.

The spelling of 55889680 in words is "fifty-five million, eight hundred eighty-nine thousand, six hundred eighty".