561523433 has 16 divisors (see below), whose sum is σ = 598240080. Its totient is φ = 526046976.

The previous prime is 561523423. The next prime is 561523453. The reversal of 561523433 is 334325165.

It can be written as a sum of positive squares in 8 ways, for example, as 58553104 + 502970329 = 7652^2 + 22427^2 .

It is a cyclic number.

It is not a de Polignac number, because 561523433 - 2⁸ = 561523177 is a prime.

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 561523433.

It is not an unprimeable number, because it can be changed into a prime (561523423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726035 + ... + 726807.

It is an arithmetic number, because the mean of its divisors is an integer number (37390005).

Almost surely, 2^561523433 is an apocalyptic number.

It is an amenable number.

561523433 is a deficient number, since it is larger than the sum of its proper divisors (36716647).

561523433 is a wasteful number, since it uses less digits than its factorization.

561523433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516.

The product of its digits is 32400, while the sum is 32.

The square root of 561523433 is about 23696.4856677103. The cubic root of 561523433 is about 825.0038239186.

Adding to 561523433 its reverse (334325165), we get a palindrome (895848598).

The spelling of 561523433 in words is "five hundred sixty-one million, five hundred twenty-three thousand, four hundred thirty-three".