561722 has 8 divisors (see below), whose sum is σ = 962976. Its totient is φ = 240732.

The previous prime is 561713. The next prime is 561733. The reversal of 561722 is 227165.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20048 + ... + 20075.

It is an arithmetic number, because the mean of its divisors is an integer number (120372).

2⁵⁶¹⁷²² is an apocalyptic number.

561722 is a deficient number, since it is larger than the sum of its proper divisors (401254).

561722 is a wasteful number, since it uses less digits than its factorization.

561722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40132.

The product of its digits is 840, while the sum is 23.

The square root of 561722 is about 749.4811538658. The cubic root of 561722 is about 82.5101058939.

Adding to 561722 its reverse (227165), we get a palindrome (788887).

The spelling of 561722 in words is "five hundred sixty-one thousand, seven hundred twenty-two".