561405334 has 16 divisors (see below), whose sum is σ = 984791808. Its totient is φ = 235006632.

The previous prime is 561405289. The next prime is 561405337. The reversal of 561405334 is 433504165.

It is a junction number, because it is equal to n+sod(n) for n = 561405296 and 561405305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561405337) 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, 465682 + ... + 466885.

It is an arithmetic number, because the mean of its divisors is an integer number (61549488).

Almost surely, 2^561405334 is an apocalyptic number.

561405334 is a deficient number, since it is larger than the sum of its proper divisors (423386474).

561405334 is a wasteful number, since it uses less digits than its factorization.

561405334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932619.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 561405334 is about 23693.9936270777. The cubic root of 561405334 is about 824.9459818932.

Adding to 561405334 its reverse (433504165), we get a palindrome (994909499).

The spelling of 561405334 in words is "five hundred sixty-one million, four hundred five thousand, three hundred thirty-four".