561793 has 4 divisors (see below), whose sum is σ = 563760. Its totient is φ = 559828.

The previous prime is 561787. The next prime is 561797. The reversal of 561793 is 397165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 397165 = 5 ⋅79433.

It is a cyclic number.

It is not a de Polignac number, because 561793 - 2⁵ = 561761 is a prime.

It is a super-3 number, since 3×561793³ = 531924783331632771, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

561793 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (561797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463 + ... + 1156.

It is an arithmetic number, because the mean of its divisors is an integer number (140940).

2⁵⁶¹⁷⁹³ is an apocalyptic number.

It is an amenable number.

561793 is a deficient number, since it is larger than the sum of its proper divisors (1967).

561793 is a wasteful number, since it uses less digits than its factorization.

561793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966.

The product of its digits is 5670, while the sum is 31.

The square root of 561793 is about 749.5285184701. The cubic root of 561793 is about 82.5135820920.

It can be divided in two parts, 56 and 1793, that added together give a square (1849 = 43²).

The spelling of 561793 in words is "five hundred sixty-one thousand, seven hundred ninety-three".