572021 has 4 divisors (see below), whose sum is σ = 574944. Its totient is φ = 569100.

The previous prime is 571973. The next prime is 572023. The reversal of 572021 is 120275.

572021 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 572021 - 2¹⁴ = 555637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572023) 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 3 ways as a sum of consecutive naturals, for example, 1145 + ... + 1566.

It is an arithmetic number, because the mean of its divisors is an integer number (143736).

2⁵⁷²⁰²¹ is an apocalyptic number.

It is an amenable number.

572021 is a deficient number, since it is larger than the sum of its proper divisors (2923).

572021 is a wasteful number, since it uses less digits than its factorization.

572021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 572021 is about 756.3206991746. The cubic root of 572021 is about 83.0113208538.

Adding to 572021 its reverse (120275), we get a palindrome (692296).

The spelling of 572021 in words is "five hundred seventy-two thousand, twenty-one".