561347444 has 24 divisors (see below), whose sum is σ = 1127181888. Its totient is φ = 239616000.

The previous prime is 561347431. The next prime is 561347447. The reversal of 561347444 is 444743165.

It is a super-2 number, since 2×561347444² = 630221905770666272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561347398 and 561347407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561347447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32909 + ... + 46964.

It is an arithmetic number, because the mean of its divisors is an integer number (46965912).

Almost surely, 2^561347444 is an apocalyptic number.

It is an amenable number.

561347444 is an abundant number, since it is smaller than the sum of its proper divisors (565834444).

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

561347444 is a wasteful number, since it uses less digits than its factorization.

561347444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80135 (or 80133 counting only the distinct ones).

The product of its digits is 161280, while the sum is 38.

The square root of 561347444 is about 23692.7719779683. The cubic root of 561347444 is about 824.9176258128.

The spelling of 561347444 in words is "five hundred sixty-one million, three hundred forty-seven thousand, four hundred forty-four".