55663628 has 6 divisors (see below), whose sum is σ = 97411356. Its totient is φ = 27831812.

The previous prime is 55663591. The next prime is 55663633. The reversal of 55663628 is 82636655.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6957950 + ... + 6957957.

It is an arithmetic number, because the mean of its divisors is an integer number (16235226).

Almost surely, 2^55663628 is an apocalyptic number.

It is an amenable number.

55663628 is a deficient number, since it is larger than the sum of its proper divisors (41747728).

55663628 is a wasteful number, since it uses less digits than its factorization.

55663628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13915911 (or 13915909 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 55663628 is about 7460.8061226653. The cubic root of 55663628 is about 381.8186780520.

The spelling of 55663628 in words is "fifty-five million, six hundred sixty-three thousand, six hundred twenty-eight".