561432 has 32 divisors (see below), whose sum is σ = 1422000. Its totient is φ = 184704.

The previous prime is 561419. The next prime is 561439. The reversal of 561432 is 234165.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 561399 and 561408.

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 561432.

It is not an unprimeable number, because it can be changed into a prime (561439) by changing a digit.

561432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3498 + ... + 3654.

2⁵⁶¹⁴³² is an apocalyptic number.

It is an amenable number.

561432 is an abundant number, since it is smaller than the sum of its proper divisors (860568).

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

561432 is a wasteful number, since it uses less digits than its factorization.

561432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 311 counting only the distinct ones).

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

The square root of 561432 is about 749.2876617161. The cubic root of 561432 is about 82.4959042962.

Adding to 561432 its reverse (234165), we get a palindrome (795597).

The spelling of 561432 in words is "five hundred sixty-one thousand, four hundred thirty-two".