561641126 has 8 divisors (see below), whose sum is σ = 844080264. Its totient is φ = 280281040.

The previous prime is 561641107. The next prime is 561641137. The reversal of 561641126 is 621146165.

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

It is a junction number, because it is equal to n+sod(n) for n = 561641092 and 561641101.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 268460 + ... + 270543.

It is an arithmetic number, because the mean of its divisors is an integer number (105510033).

Almost surely, 2^561641126 is an apocalyptic number.

561641126 is a deficient number, since it is larger than the sum of its proper divisors (282439138).

561641126 is a wasteful number, since it uses less digits than its factorization.

561641126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539526.

The product of its digits is 8640, while the sum is 32.

The square root of 561641126 is about 23698.9688805231. The cubic root of 561641126 is about 825.0614590272.

The spelling of 561641126 in words is "five hundred sixty-one million, six hundred forty-one thousand, one hundred twenty-six".