561234 has 16 divisors (see below), whose sum is σ = 1136160. Its totient is φ = 184800.

The previous prime is 561229. The next prime is 561251. The reversal of 561234 is 432165.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 561234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (71010).

2⁵⁶¹²³⁴ is an apocalyptic number.

561234 is an abundant number, since it is smaller than the sum of its proper divisors (574926).

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

561234 is a wasteful number, since it uses less digits than its factorization.

561234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its digits is 720, while the sum is 21.

The square root of 561234 is about 749.1555245742. The cubic root of 561234 is about 82.4862052234.

Adding to 561234 its reverse (432165), we get a palindrome (993399).

The spelling of 561234 in words is "five hundred sixty-one thousand, two hundred thirty-four".