573540 has 72 divisors (see below), whose sum is σ = 1787520. Its totient is φ = 137280.

The previous prime is 573527. The next prime is 573557. The reversal of 573540 is 45375.

It is a self number, because there is not a number n which added to its sum of digits gives 573540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7221 + ... + 7299.

2⁵⁷³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 573540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893760).

573540 is an abundant number, since it is smaller than the sum of its proper divisors (1213980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

573540 is a wasteful number, since it uses less digits than its factorization.

573540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 573540 is about 757.3242370346. The cubic root of 573540 is about 83.0847346775.

It can be divided in two parts, 5735 and 40, that added together give a palindrome (5775).

The spelling of 573540 in words is "five hundred seventy-three thousand, five hundred forty".