55568580 has 96 divisors (see below), whose sum is σ = 166271616. Its totient is φ = 13817856.

The previous prime is 55568543. The next prime is 55568587. The reversal of 55568580 is 8586555.

It is not an unprimeable number, because it can be changed into a prime (55568587) 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, 159967 + ... + 160313.

It is an arithmetic number, because the mean of its divisors is an integer number (1731996).

Almost surely, 2^55568580 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 55568580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83135808).

55568580 is an abundant number, since it is smaller than the sum of its proper divisors (110703036).

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

55568580 is a wasteful number, since it uses less digits than its factorization.

55568580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 42.

The square root of 55568580 is about 7454.4335800918. The cubic root of 55568580 is about 381.6012303886.

The spelling of 55568580 in words is "fifty-five million, five hundred sixty-eight thousand, five hundred eighty".