55616648 has 32 divisors (see below), whose sum is σ = 110179200. Its totient is φ = 26246592.

The previous prime is 55616647. The next prime is 55616653. The reversal of 55616648 is 84661655.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55616641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55286 + ... + 56282.

It is an arithmetic number, because the mean of its divisors is an integer number (3443100).

Almost surely, 2^55616648 is an apocalyptic number.

It is an amenable number.

55616648 is a deficient number, since it is larger than the sum of its proper divisors (54562552).

55616648 is a wasteful number, since it uses less digits than its factorization.

55616648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1385 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 55616648 is about 7457.6570047167. The cubic root of 55616648 is about 381.7112297295.

The spelling of 55616648 in words is "fifty-five million, six hundred sixteen thousand, six hundred forty-eight".