56855580 has 48 divisors (see below), whose sum is σ = 160853280. Its totient is φ = 15003648.

The previous prime is 56855567. The next prime is 56855641. The reversal of 56855580 is 8555865.

It is a super-3 number, since 3×56855580³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (3351110).

Almost surely, 2^56855580 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 56855580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80426640).

56855580 is an abundant number, since it is smaller than the sum of its proper divisors (103997700).

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

56855580 is a wasteful number, since it uses less digits than its factorization.

56855580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878 (or 9876 counting only the distinct ones).

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

The square root of 56855580 is about 7540.2639211105. The cubic root of 56855580 is about 384.5248086815.

The spelling of 56855580 in words is "fifty-six million, eight hundred fifty-five thousand, five hundred eighty".