561244 has 12 divisors (see below), whose sum is σ = 988624. Its totient is φ = 278784.

The previous prime is 561229. The next prime is 561251. The reversal of 561244 is 442165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409 + ... + 1135.

2⁵⁶¹²⁴⁴ is an apocalyptic number.

It is an amenable number.

561244 is a deficient number, since it is larger than the sum of its proper divisors (427380).

561244 is a wasteful number, since it uses less digits than its factorization.

561244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 922 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 561244 is about 749.1621987260. The cubic root of 561244 is about 82.4866951302.

The spelling of 561244 in words is "five hundred sixty-one thousand, two hundred forty-four".