561441822 has 16 divisors (see below), whose sum is σ = 1171704960. Its totient is φ = 179010392.

The previous prime is 561441787. The next prime is 561441857. The reversal of 561441822 is 228144165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (561441787) and next prime (561441857).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034072 + ... + 2034347.

It is an arithmetic number, because the mean of its divisors is an integer number (73231560).

Almost surely, 2^561441822 is an apocalyptic number.

561441822 is an abundant number, since it is smaller than the sum of its proper divisors (610263138).

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

561441822 is a wasteful number, since it uses less digits than its factorization.

561441822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068447.

The product of its digits is 15360, while the sum is 33.

The square root of 561441822 is about 23694.7635987363. The cubic root of 561441822 is about 824.9638536964.

Adding to 561441822 its reverse (228144165), we get a palindrome (789585987).

The spelling of 561441822 in words is "five hundred sixty-one million, four hundred forty-one thousand, eight hundred twenty-two".