561354394 has 8 divisors (see below), whose sum is σ = 849483540. Its totient is φ = 278193216.

The previous prime is 561354383. The next prime is 561354407. The reversal of 561354394 is 493453165.

561354394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 493506225 + 67848169 = 22215^2 + 8237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241709 + ... + 1242160.

Almost surely, 2^561354394 is an apocalyptic number.

561354394 is a deficient number, since it is larger than the sum of its proper divisors (288129146).

561354394 is a wasteful number, since it uses less digits than its factorization.

561354394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483984.

The product of its digits is 194400, while the sum is 40.

The square root of 561354394 is about 23692.9186467181. The cubic root of 561354394 is about 824.9210302128.

The spelling of 561354394 in words is "five hundred sixty-one million, three hundred fifty-four thousand, three hundred ninety-four".