55111056 has 320 divisors, whose sum is σ = 202653696. Its totient is φ = 12441600.

The previous prime is 55111033. The next prime is 55111073. The reversal of 55111056 is 65011155.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1489470 + ... + 1489506.

Almost surely, 2^55111056 is an apocalyptic number.

55111056 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 55111056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101326848).

55111056 is an abundant number, since it is smaller than the sum of its proper divisors (147542640).

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

55111056 is a wasteful number, since it uses less digits than its factorization.

55111056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 55111056 is about 7423.6821052629. The cubic root of 55111056 is about 380.5510380419.

Subtracting 55111056 from its reverse (65011155), we obtain a palindrome (9900099).

It can be divided in two parts, 55 and 111056, that added together give a palindrome (111111).

The spelling of 55111056 in words is "fifty-five million, one hundred eleven thousand, fifty-six".