55547856 has 240 divisors, whose sum is σ = 199681664. Its totient is φ = 14556672.

The previous prime is 55547831. The next prime is 55547861. The reversal of 55547856 is 65874555.

55547856 is a `hidden beast` number, since 55 + 547 + 8 + 56 = 666.

Its product of digits (840000) is a multiple of the sum of its prime factors (200).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 353730 + ... + 353886.

Almost surely, 2^55547856 is an apocalyptic number.

55547856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55547856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99840832).

55547856 is an abundant number, since it is smaller than the sum of its proper divisors (144133808).

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

55547856 is a wasteful number, since it uses less digits than its factorization.

55547856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 182 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The square root of 55547856 is about 7453.0434052137. The cubic root of 55547856 is about 381.5537857882.

The spelling of 55547856 in words is "fifty-five million, five hundred forty-seven thousand, eight hundred fifty-six".