561722334 has 16 divisors (see below), whose sum is σ = 1126461072. Its totient is φ = 186738048.

The previous prime is 561722309. The next prime is 561722339. The reversal of 561722334 is 433227165.

It is a junction number, because it is equal to n+sod(n) for n = 561722295 and 561722304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561722339) 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, 123259 + ... + 127734.

It is an arithmetic number, because the mean of its divisors is an integer number (70403817).

Almost surely, 2^561722334 is an apocalyptic number.

561722334 is an abundant number, since it is smaller than the sum of its proper divisors (564738738).

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

561722334 is a wasteful number, since it uses less digits than its factorization.

561722334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251371.

The product of its digits is 30240, while the sum is 33.

The square root of 561722334 is about 23700.6821420819. The cubic root of 561722334 is about 825.1012224745.

Adding to 561722334 its reverse (433227165), we get a palindrome (994949499).

The spelling of 561722334 in words is "five hundred sixty-one million, seven hundred twenty-two thousand, three hundred thirty-four".