55216158 has 8 divisors (see below), whose sum is σ = 110432328. Its totient is φ = 18405384.

The previous prime is 55216151. The next prime is 55216199. The reversal of 55216158 is 85161255.

It is a sphenic number, since it is the product of 3 distinct primes.

55216158 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216151) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4601341 + ... + 4601352.

It is an arithmetic number, because the mean of its divisors is an integer number (13804041).

Almost surely, 2^55216158 is an apocalyptic number.

55216158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55216158 is a wasteful number, since it uses less digits than its factorization.

55216158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9202698.

The product of its digits is 12000, while the sum is 33.

The square root of 55216158 is about 7430.7575656860. The cubic root of 55216158 is about 380.7928000354.

The spelling of 55216158 in words is "fifty-five million, two hundred sixteen thousand, one hundred fifty-eight".