56856560 has 40 divisors (see below), whose sum is σ = 133168560. Its totient is φ = 22574592.

The previous prime is 56856539. The next prime is 56856571. The reversal of 56856560 is 6565865.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8564 + ... + 13676.

It is an arithmetic number, because the mean of its divisors is an integer number (3329214).

Almost surely, 2^56856560 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 56856560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66584280).

56856560 is an abundant number, since it is smaller than the sum of its proper divisors (76312000).

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

56856560 is a wasteful number, since it uses less digits than its factorization.

56856560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265 (or 5259 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 56856560 is about 7540.3289052932. The cubic root of 56856560 is about 384.5270179760.

The spelling of 56856560 in words is "fifty-six million, eight hundred fifty-six thousand, five hundred sixty".