55000216 has 8 divisors (see below), whose sum is σ = 103125420. Its totient is φ = 27500104.

The previous prime is 55000207. The next prime is 55000243. The reversal of 55000216 is 61200055.

It is a happy number.

55000216 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 (8).

It is a junction number, because it is equal to n+sod(n) for n = 55000193 and 55000202.

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, 3437506 + ... + 3437521.

Almost surely, 2^55000216 is an apocalyptic number.

It is an amenable number.

55000216 is a deficient number, since it is larger than the sum of its proper divisors (48125204).

55000216 is a wasteful number, since it uses less digits than its factorization.

55000216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875033 (or 6875029 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55000216 is about 7416.2130497984. The cubic root of 55000216 is about 380.2957439165.

The spelling of 55000216 in words is "fifty-five million, two hundred sixteen", and thus it is an aban number.