561134647 has 2 divisors, whose sum is σ = 561134648. Its totient is φ = 561134646.

The previous prime is 561134557. The next prime is 561134671. The reversal of 561134647 is 746431165.

561134647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561134647 - 2¹¹ = 561132599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561134687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280567323 + 280567324.

It is an arithmetic number, because the mean of its divisors is an integer number (280567324).

Almost surely, 2^561134647 is an apocalyptic number.

561134647 is a deficient number, since it is larger than the sum of its proper divisors (1).

561134647 is an equidigital number, since it uses as much as digits as its factorization.

561134647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 561134647 is about 23688.2807945195. The cubic root of 561134647 is about 824.8133753561.

The spelling of 561134647 in words is "five hundred sixty-one million, one hundred thirty-four thousand, six hundred forty-seven".