561881793 has 8 divisors (see below), whose sum is σ = 817282656. Its totient is φ = 340534400.

The previous prime is 561881729. The next prime is 561881809. The reversal of 561881793 is 397188165.

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

It is a cyclic number.

It is not a de Polignac number, because 561881793 - 2⁶ = 561881729 is a prime.

It is a super-2 number, since 2×561881793² = 631422298609789698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561881713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8513328 + ... + 8513393.

It is an arithmetic number, because the mean of its divisors is an integer number (102160332).

Almost surely, 2^561881793 is an apocalyptic number.

It is an amenable number.

561881793 is a deficient number, since it is larger than the sum of its proper divisors (255400863).

561881793 is a wasteful number, since it uses less digits than its factorization.

561881793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17026735.

The product of its digits is 362880, while the sum is 48.

The square root of 561881793 is about 23704.0459204753. The cubic root of 561881793 is about 825.1792903264.

The spelling of 561881793 in words is "five hundred sixty-one million, eight hundred eighty-one thousand, seven hundred ninety-three".