561788323 has 4 divisors (see below), whose sum is σ = 562726800. Its totient is φ = 560849848.

The previous prime is 561788303. The next prime is 561788327. The reversal of 561788323 is 323887165.

561788323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561788323 - 2⁵ = 561788291 is a prime.

It is a super-2 number, since 2×561788323² = 631212239718304658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561788323.

It is not an unprimeable number, because it can be changed into a prime (561788327) 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, 468340 + ... + 469537.

It is an arithmetic number, because the mean of its divisors is an integer number (140681700).

Almost surely, 2^561788323 is an apocalyptic number.

561788323 is a deficient number, since it is larger than the sum of its proper divisors (938477).

561788323 is an equidigital number, since it uses as much as digits as its factorization.

561788323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938476.

The product of its digits is 241920, while the sum is 43.

The square root of 561788323 is about 23702.0742341256. The cubic root of 561788323 is about 825.1335311255.

The spelling of 561788323 in words is "five hundred sixty-one million, seven hundred eighty-eight thousand, three hundred twenty-three".