55155664 has 20 divisors (see below), whose sum is σ = 107046720. Its totient is φ = 27530720.

The previous prime is 55155649. The next prime is 55155671. The reversal of 55155664 is 46655155.

55155664 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 an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7929 + ... + 13159.

It is an arithmetic number, because the mean of its divisors is an integer number (5352336).

Almost surely, 2^55155664 is an apocalyptic number.

It is an amenable number.

55155664 is a deficient number, since it is larger than the sum of its proper divisors (51891056).

55155664 is a wasteful number, since it uses less digits than its factorization.

55155664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898 (or 5892 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The square root of 55155664 is about 7426.6859365399. The cubic root of 55155664 is about 380.6536855798.

The spelling of 55155664 in words is "fifty-five million, one hundred fifty-five thousand, six hundred sixty-four".