55018964 has 108 divisors (see below), whose sum is σ = 133183008. Its totient is φ = 19656000.

The previous prime is 55018961. The next prime is 55019009. The reversal of 55018964 is 46981055.

55018964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55018961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 364289 + ... + 364439.

It is an arithmetic number, because the mean of its divisors is an integer number (1233176).

Almost surely, 2^55018964 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 55018964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66591504).

55018964 is an abundant number, since it is smaller than the sum of its proper divisors (78164044).

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

55018964 is a wasteful number, since it uses less digits than its factorization.

55018964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 55018964 is about 7417.4769295226. The cubic root of 55018964 is about 380.3389496538.

The spelling of 55018964 in words is "fifty-five million, eighteen thousand, nine hundred sixty-four".