55020216 has 16 divisors (see below), whose sum is σ = 137550600. Its totient is φ = 18340064.

The previous prime is 55020197. The next prime is 55020223. The reversal of 55020216 is 61202055.

55020216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55020192 and 55020201.

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 in 3 ways as a sum of consecutive naturals, for example, 1146231 + ... + 1146278.

Almost surely, 2^55020216 is an apocalyptic number.

It is an amenable number.

55020216 is an abundant number, since it is smaller than the sum of its proper divisors (82530384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55020216 is a wasteful number, since it uses less digits than its factorization.

55020216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292518 (or 2292514 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55020216 is about 7417.5613243168. The cubic root of 55020216 is about 380.3418346030.

The spelling of 55020216 in words is "fifty-five million, twenty thousand, two hundred sixteen".