54855221 has 8 divisors (see below), whose sum is σ = 55564704. Its totient is φ = 54149200.

The previous prime is 54855187. The next prime is 54855233. The reversal of 54855221 is 12255845.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54855221 is a prime.

It is a Duffinian 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 (54855271) 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 7 ways as a sum of consecutive naturals, for example, 46586 + ... + 47748.

It is an arithmetic number, because the mean of its divisors is an integer number (6945588).

Almost surely, 2^54855221 is an apocalyptic number.

It is an amenable number.

54855221 is a deficient number, since it is larger than the sum of its proper divisors (709483).

54855221 is a wasteful number, since it uses less digits than its factorization.

54855221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its digits is 16000, while the sum is 32.

The square root of 54855221 is about 7406.4310568586. The cubic root of 54855221 is about 379.9612633644.

The spelling of 54855221 in words is "fifty-four million, eight hundred fifty-five thousand, two hundred twenty-one".