561534433 has 4 divisors (see below), whose sum is σ = 561817620. Its totient is φ = 561251248.

The previous prime is 561534409. The next prime is 561534451. The reversal of 561534433 is 334435165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334435165 = 5 ⋅66887033.

It can be written as a sum of positive squares in 2 ways, for example, as 307195729 + 254338704 = 17527^2 + 15948^2 .

It is a cyclic number.

It is not a de Polignac number, because 561534433 - 2¹³ = 561526241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561534733) 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, 138598 + ... + 142591.

It is an arithmetic number, because the mean of its divisors is an integer number (140454405).

Almost surely, 2^561534433 is an apocalyptic number.

It is an amenable number.

561534433 is a deficient number, since it is larger than the sum of its proper divisors (283187).

561534433 is a wasteful number, since it uses less digits than its factorization.

561534433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283186.

The product of its digits is 64800, while the sum is 34.

The square root of 561534433 is about 23696.7177685012. The cubic root of 561534433 is about 825.0092110389.

Adding to 561534433 its reverse (334435165), we get a palindrome (895969598).

The spelling of 561534433 in words is "five hundred sixty-one million, five hundred thirty-four thousand, four hundred thirty-three".