55663694 has 4 divisors (see below), whose sum is σ = 83495544. Its totient is φ = 27831846.

The previous prime is 55663681. The next prime is 55663733. The reversal of 55663694 is 49636655.

55663694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49636655 = 5 ⋅9927331.

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 as a sum of consecutive naturals, namely, 13915922 + ... + 13915925.

It is an arithmetic number, because the mean of its divisors is an integer number (20873886).

Almost surely, 2^55663694 is an apocalyptic number.

55663694 is a deficient number, since it is larger than the sum of its proper divisors (27831850).

55663694 is a wasteful number, since it uses less digits than its factorization.

55663694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27831849.

The product of its digits is 583200, while the sum is 44.

The square root of 55663694 is about 7460.8105457785. The cubic root of 55663694 is about 381.8188289586.

The spelling of 55663694 in words is "fifty-five million, six hundred sixty-three thousand, six hundred ninety-four".