55615056 has 80 divisors (see below), whose sum is σ = 165894144. Its totient is φ = 15725952.

The previous prime is 55615051. The next prime is 55615067. The reversal of 55615056 is 65051655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55615051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33805 + ... + 35411.

Almost surely, 2^55615056 is an apocalyptic number.

55615056 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 55615056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82947072).

55615056 is an abundant number, since it is smaller than the sum of its proper divisors (110279088).

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

55615056 is a wasteful number, since it uses less digits than its factorization.

55615056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55615056 is about 7457.5502680170. The cubic root of 55615056 is about 381.7075875941.

The spelling of 55615056 in words is "fifty-five million, six hundred fifteen thousand, fifty-six".