55109216 has 12 divisors (see below), whose sum is σ = 108496332. Its totient is φ = 27554592.

The previous prime is 55109167. The next prime is 55109231. The reversal of 55109216 is 61290155.

It is a congruent number.

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, 861050 + ... + 861113.

It is an arithmetic number, because the mean of its divisors is an integer number (9041361).

Almost surely, 2^55109216 is an apocalyptic number.

It is an amenable number.

55109216 is a deficient number, since it is larger than the sum of its proper divisors (53387116).

55109216 is a wasteful number, since it uses less digits than its factorization.

55109216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722173 (or 1722165 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 55109216 is about 7423.5581765081. The cubic root of 55109216 is about 380.5468028257.

The spelling of 55109216 in words is "fifty-five million, one hundred nine thousand, two hundred sixteen".