55188064 has 12 divisors (see below), whose sum is σ = 108651564. Its totient is φ = 27594016.

The previous prime is 55188061. The next prime is 55188079. The reversal of 55188064 is 46088155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55188061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862282 + ... + 862345.

It is an arithmetic number, because the mean of its divisors is an integer number (9054297).

Almost surely, 2^55188064 is an apocalyptic number.

It is an amenable number.

55188064 is a deficient number, since it is larger than the sum of its proper divisors (53463500).

55188064 is a wasteful number, since it uses less digits than its factorization.

55188064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724637 (or 1724629 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 55188064 is about 7428.8669391772. The cubic root of 55188064 is about 380.7282065770.

Subtracting from 55188064 its reverse (46088155), we obtain a palindrome (9099909).

The spelling of 55188064 in words is "fifty-five million, one hundred eighty-eight thousand, sixty-four".