55663164 has 18 divisors (see below), whose sum is σ = 140704200. Its totient is φ = 18554376.

The previous prime is 55663147. The next prime is 55663169. The reversal of 55663164 is 46136655.

55663164 is a `hidden beast` number, since 5 + 566 + 31 + 64 = 666.

55663164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1546199 = 55663164 / (5 + 5 + 6 + 6 + 3 + 1 + 6 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55663169) 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 5 ways as a sum of consecutive naturals, for example, 773064 + ... + 773135.

It is an arithmetic number, because the mean of its divisors is an integer number (7816900).

Almost surely, 2^55663164 is an apocalyptic number.

It is an amenable number.

55663164 is an abundant number, since it is smaller than the sum of its proper divisors (85041036).

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

55663164 is a wasteful number, since it uses less digits than its factorization.

55663164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546209 (or 1546204 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 55663164 is about 7460.7750267650. The cubic root of 55663164 is about 381.8176171297.

The spelling of 55663164 in words is "fifty-five million, six hundred sixty-three thousand, one hundred sixty-four".