561573635 has 32 divisors (see below), whose sum is σ = 811717632. Its totient is φ = 364636800.

The previous prime is 561573619. The next prime is 561573647. The reversal of 561573635 is 536375165.

561573635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561573635 - 2⁴ = 561573619 is a prime.

It is a super-2 number, since 2×561573635² = 630729895054226450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561573592 and 561573601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77852 + ... + 84758.

It is an arithmetic number, because the mean of its divisors is an integer number (25366176).

Almost surely, 2^561573635 is an apocalyptic number.

561573635 is a deficient number, since it is larger than the sum of its proper divisors (250143997).

561573635 is a wasteful number, since it uses less digits than its factorization.

561573635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043.

The product of its digits is 283500, while the sum is 41.

The square root of 561573635 is about 23697.5449150329. The cubic root of 561573635 is about 825.0284091839.

The spelling of 561573635 in words is "five hundred sixty-one million, five hundred seventy-three thousand, six hundred thirty-five".