55216870 has 16 divisors (see below), whose sum is σ = 102818160. Its totient is φ = 21325024.

The previous prime is 55216853. The next prime is 55216871. The reversal of 55216870 is 7861255.

55216870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216871) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 94912 + ... + 95491.

It is an arithmetic number, because the mean of its divisors is an integer number (6426135).

Almost surely, 2^55216870 is an apocalyptic number.

55216870 is a deficient number, since it is larger than the sum of its proper divisors (47601290).

55216870 is a wasteful number, since it uses less digits than its factorization.

55216870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190439.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 55216870 is about 7430.8054745095. The cubic root of 55216870 is about 380.7944367744.

The spelling of 55216870 in words is "fifty-five million, two hundred sixteen thousand, eight hundred seventy".