55705856 has 36 divisors (see below), whose sum is σ = 111945792. Its totient is φ = 27664896.

The previous prime is 55705847. The next prime is 55705861. The reversal of 55705856 is 65850755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42101 + ... + 43403.

Almost surely, 2^55705856 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 55705856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55972896).

55705856 is an abundant number, since it is smaller than the sum of its proper divisors (56239936).

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

55705856 is a wasteful number, since it uses less digits than its factorization.

55705856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 41.

The square root of 55705856 is about 7463.6355752408. The cubic root of 55705856 is about 381.9152064566.

The spelling of 55705856 in words is "fifty-five million, seven hundred five thousand, eight hundred fifty-six".