561084 has 12 divisors (see below), whose sum is σ = 1309224. Its totient is φ = 187024.

The previous prime is 561083. The next prime is 561091. The reversal of 561084 is 480165.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561084.

It is not an unprimeable number, because it can be changed into a prime (561083) 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, 23367 + ... + 23390.

It is an arithmetic number, because the mean of its divisors is an integer number (109102).

2⁵⁶¹⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

561084 is an abundant number, since it is smaller than the sum of its proper divisors (748140).

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

561084 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 561084 = (168504)₁₃.

561084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46764 (or 46762 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 561084 is about 749.0554051604. The cubic root of 561084 is about 82.4788559221.

The spelling of 561084 in words is "five hundred sixty-one thousand, eighty-four".