55611120 has 80 divisors (see below), whose sum is σ = 173738880. Its totient is φ = 14714112.

The previous prime is 55611103. The next prime is 55611137. The reversal of 55611120 is 2111655.

It is an interprime number because it is at equal distance from previous prime (55611103) and next prime (55611137).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32527 + ... + 34193.

It is an arithmetic number, because the mean of its divisors is an integer number (2171736).

Almost surely, 2^55611120 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 55611120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86869440).

55611120 is an abundant number, since it is smaller than the sum of its proper divisors (118127760).

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

55611120 is a wasteful number, since it uses less digits than its factorization.

55611120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 55611120 is about 7457.2863697192. The cubic root of 55611120 is about 381.6985826195.

Adding to 55611120 its reverse (2111655), we get a palindrome (57722775).

The spelling of 55611120 in words is "fifty-five million, six hundred eleven thousand, one hundred twenty".