572221 has 4 divisors (see below), whose sum is σ = 616252. Its totient is φ = 528192.

The previous prime is 572207. The next prime is 572233. The reversal of 572221 is 122275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 264196 + 308025 = 514^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 572221 - 2⁷ = 572093 is a prime.

572221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572251) 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, 21996 + ... + 22021.

It is an arithmetic number, because the mean of its divisors is an integer number (154063).

2⁵⁷²²²¹ is an apocalyptic number.

It is an amenable number.

572221 is a deficient number, since it is larger than the sum of its proper divisors (44031).

572221 is a wasteful number, since it uses less digits than its factorization.

572221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44030.

The product of its digits is 280, while the sum is 19.

The square root of 572221 is about 756.4529066637. The cubic root of 572221 is about 83.0209943505.

Adding to 572221 its reverse (122275), we get a palindrome (694496).

It can be divided in two parts, 57 and 2221, that added together give a triangular number (2278 = T₆₇).

The spelling of 572221 in words is "five hundred seventy-two thousand, two hundred twenty-one".