573221 has 12 divisors (see below), whose sum is σ = 661632. Its totient is φ = 492000.

The previous prime is 573197. The next prime is 573247. The reversal of 573221 is 122375.

It is a de Polignac number, because none of the positive numbers 2^k-573221 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 573193 and 573202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (570221) 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 11 ways as a sum of consecutive naturals, for example, 13961 + ... + 14001.

It is an arithmetic number, because the mean of its divisors is an integer number (55136).

2⁵⁷³²²¹ is an apocalyptic number.

It is an amenable number.

573221 is a deficient number, since it is larger than the sum of its proper divisors (88411).

573221 is a wasteful number, since it uses less digits than its factorization.

573221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 83 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 573221 is about 757.1135978174. The cubic root of 573221 is about 83.0693280533.

Adding to 573221 its reverse (122375), we get a palindrome (695596).

The spelling of 573221 in words is "five hundred seventy-three thousand, two hundred twenty-one".