55227281 has 16 divisors (see below), whose sum is σ = 60739200. Its totient is φ = 50012928.

The previous prime is 55227239. The next prime is 55227299. The reversal of 55227281 is 18272255.

It is a happy number.

55227281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55227281 - 2⁶ = 55227217 is a prime.

It is a super-2 number, since 2×55227281² = 6100105133305922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55227181) 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 15 ways as a sum of consecutive naturals, for example, 61820 + ... + 62706.

It is an arithmetic number, because the mean of its divisors is an integer number (3796200).

Almost surely, 2^55227281 is an apocalyptic number.

It is an amenable number.

55227281 is a deficient number, since it is larger than the sum of its proper divisors (5511919).

55227281 is a wasteful number, since it uses less digits than its factorization.

55227281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048.

The product of its digits is 11200, while the sum is 32.

The square root of 55227281 is about 7431.5059712013. The cubic root of 55227281 is about 380.8183678770.

The spelling of 55227281 in words is "fifty-five million, two hundred twenty-seven thousand, two hundred eighty-one".