573021 has 16 divisors (see below), whose sum is σ = 894400. Its totient is φ = 361584.

The previous prime is 573007. The next prime is 573031. The reversal of 573021 is 120375.

It is not a de Polignac number, because 573021 - 2¹⁹ = 48733 is a prime.

It is a Duffinian number.

It is a Curzon number.

573021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 572985 and 573003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (573031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (55900).

2⁵⁷³⁰²¹ is an apocalyptic number.

It is an amenable number.

573021 is a deficient number, since it is larger than the sum of its proper divisors (321379).

573021 is a wasteful number, since it uses less digits than its factorization.

573021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 573021 is about 756.9815057186. The cubic root of 573021 is about 83.0596658124.

Adding to 573021 its reverse (120375), we get a palindrome (693396).

The spelling of 573021 in words is "five hundred seventy-three thousand, twenty-one".