55816656 has 80 divisors (see below), whose sum is σ = 165656064. Its totient is φ = 15864192.

The previous prime is 55816637. The next prime is 55816667. The reversal of 55816656 is 65661855.

55816656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94795 + ... + 95381.

Almost surely, 2^55816656 is an apocalyptic number.

55816656 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 55816656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82828032).

55816656 is an abundant number, since it is smaller than the sum of its proper divisors (109839408).

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

55816656 is a wasteful number, since it uses less digits than its factorization.

55816656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888 (or 882 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The square root of 55816656 is about 7471.0545440386. The cubic root of 55816656 is about 382.1682509476.

The spelling of 55816656 in words is "fifty-five million, eight hundred sixteen thousand, six hundred fifty-six".