55216350 has 96 divisors (see below), whose sum is σ = 173917440. Its totient is φ = 12618720.

The previous prime is 55216333. The next prime is 55216351. The reversal of 55216350 is 5361255.

55216350 is a `hidden beast` number, since 5 + 5 + 21 + 635 + 0 = 666.

55216350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216351) 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 47 ways as a sum of consecutive naturals, for example, 6529 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (1811640).

Almost surely, 2^55216350 is an apocalyptic number.

55216350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55216350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86958720).

55216350 is an abundant number, since it is smaller than the sum of its proper divisors (118701090).

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

55216350 is a wasteful number, since it uses less digits than its factorization.

55216350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5871 (or 5860 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55216350 is about 7430.7704849497. The cubic root of 55216350 is about 380.7932414046.

The spelling of 55216350 in words is "fifty-five million, two hundred sixteen thousand, three hundred fifty".