561583 has 8 divisors (see below), whose sum is σ = 645120. Its totient is φ = 483480.

The previous prime is 561559. The next prime is 561599. The reversal of 561583 is 385165.

561583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561583 - 2⁵ = 561551 is a prime.

It is a Duffinian number.

561583 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (80640).

2⁵⁶¹⁵⁸³ is an apocalyptic number.

561583 is a deficient number, since it is larger than the sum of its proper divisors (83537).

561583 is a wasteful number, since it uses less digits than its factorization.

561583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717.

The product of its digits is 3600, while the sum is 28.

The square root of 561583 is about 749.3884173111. The cubic root of 561583 is about 82.5032995313.

The spelling of 561583 in words is "five hundred sixty-one thousand, five hundred eighty-three".