221548 has 12 divisors (see below), whose sum is σ = 392392. Its totient is φ = 109440.

The previous prime is 221539. The next prime is 221549. The reversal of 221548 is 845122.

221548 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (221549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103 + ... + 673.

2²²¹⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

221548 is a deficient number, since it is larger than the sum of its proper divisors (170844).

221548 is a wasteful number, since it uses less digits than its factorization.

221548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 670 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 221548 is about 470.6888568896. The cubic root of 221548 is about 60.5093672175.

The spelling of 221548 in words is "two hundred twenty-one thousand, five hundred forty-eight".