55513056 has 48 divisors (see below), whose sum is σ = 147498624. Its totient is φ = 18278784.

The previous prime is 55513027. The next prime is 55513093. The reversal of 55513056 is 65031555.

It is a tau number, because it is divible by the number of its divisors (48).

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, 4485 + ... + 11451.

It is an arithmetic number, because the mean of its divisors is an integer number (3072888).

Almost surely, 2^55513056 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 55513056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73749312).

55513056 is an abundant number, since it is smaller than the sum of its proper divisors (91985568).

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

55513056 is a wasteful number, since it uses less digits than its factorization.

55513056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 55513056 is about 7450.7084226938. The cubic root of 55513056 is about 381.4740896696.

The spelling of 55513056 in words is "fifty-five million, five hundred thirteen thousand, fifty-six".