561189 has 8 divisors (see below), whose sum is σ = 752032. Its totient is φ = 372240.

The previous prime is 561181. The next prime is 561191. The reversal of 561189 is 981165.

It is a happy number.

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

It is not a de Polignac number, because 561189 - 2³ = 561181 is a prime.

It is an Ulam number.

It is a Duffinian number.

561189 is a lucky 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 561189.

It is not an unprimeable number, because it can be changed into a prime (561181) 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, 519 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (94004).

2⁵⁶¹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

561189 is a deficient number, since it is larger than the sum of its proper divisors (190843).

561189 is a wasteful number, since it uses less digits than its factorization.

561189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947.

The product of its digits is 2160, while the sum is 30.

The square root of 561189 is about 749.1254901550. The cubic root of 561189 is about 82.4840005705.

The spelling of 561189 in words is "five hundred sixty-one thousand, one hundred eighty-nine".