5478221 has 8 divisors (see below), whose sum is σ = 6284544. Its totient is φ = 4677840.

The previous prime is 5478211. The next prime is 5478223. The reversal of 5478221 is 1228745.

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-5478221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5478223) 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 7 ways as a sum of consecutive naturals, for example, 716 + ... + 3386.

It is an arithmetic number, because the mean of its divisors is an integer number (785568).

Almost surely, 2^5478221 is an apocalyptic number.

It is an amenable number.

5478221 is a deficient number, since it is larger than the sum of its proper divisors (806323).

5478221 is a wasteful number, since it uses less digits than its factorization.

5478221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971.

The product of its digits is 4480, while the sum is 29.

The square root of 5478221 is about 2340.5599757323. The cubic root of 5478221 is about 176.2841162602.

The spelling of 5478221 in words is "five million, four hundred seventy-eight thousand, two hundred twenty-one".