55221446 has 8 divisors (see below), whose sum is σ = 94665360. Its totient is φ = 23666328.

The previous prime is 55221433. The next prime is 55221461. The reversal of 55221446 is 64412255.

55221446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 1972181 + ... + 1972208.

It is an arithmetic number, because the mean of its divisors is an integer number (11833170).

Almost surely, 2^55221446 is an apocalyptic number.

55221446 is a deficient number, since it is larger than the sum of its proper divisors (39443914).

55221446 is a wasteful number, since it uses less digits than its factorization.

55221446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944398.

The product of its digits is 9600, while the sum is 29.

The square root of 55221446 is about 7431.1133755313. The cubic root of 55221446 is about 380.8049557046.

The spelling of 55221446 in words is "fifty-five million, two hundred twenty-one thousand, four hundred forty-six".