55645056 has 96 divisors (see below), whose sum is σ = 166147800. Its totient is φ = 18537984.

The previous prime is 55645033. The next prime is 55645061. The reversal of 55645056 is 65054655.

It is a happy number.

55645056 is a `hidden beast` number, since 5 + 5 + 645 + 0 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55645056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30210 + ... + 31998.

Almost surely, 2^55645056 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 55645056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83073900).

55645056 is an abundant number, since it is smaller than the sum of its proper divisors (110502744).

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

55645056 is an equidigital number, since it uses as much as digits as its factorization.

55645056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 55645056 is about 7459.5613812073. The cubic root of 55645056 is about 381.7762091153.

The spelling of 55645056 in words is "fifty-five million, six hundred forty-five thousand, fifty-six".