561906132 has 12 divisors (see below), whose sum is σ = 1311114336. Its totient is φ = 187302040.

The previous prime is 561906119. The next prime is 561906139. The reversal of 561906132 is 231609165.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 561906093 and 561906102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561906139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23412744 + ... + 23412767.

It is an arithmetic number, because the mean of its divisors is an integer number (109259528).

Almost surely, 2^561906132 is an apocalyptic number.

It is an amenable number.

561906132 is an abundant number, since it is smaller than the sum of its proper divisors (749208204).

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

561906132 is a wasteful number, since it uses less digits than its factorization.

561906132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46825518 (or 46825516 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 561906132 is about 23704.5593082850. The cubic root of 561906132 is about 825.1912049017.

The spelling of 561906132 in words is "five hundred sixty-one million, nine hundred six thousand, one hundred thirty-two".