561461 has 2 divisors, whose sum is σ = 561462. Its totient is φ = 561460.

The previous prime is 561439. The next prime is 561521. The reversal of 561461 is 164165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 28561 = 730^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 561461 - 2¹⁰ = 560437 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561461.

It is not a weakly prime, because it can be changed into another prime (561061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280730 + 280731.

It is an arithmetic number, because the mean of its divisors is an integer number (280731).

2⁵⁶¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

561461 is a deficient number, since it is larger than the sum of its proper divisors (1).

561461 is an equidigital number, since it uses as much as digits as its factorization.

561461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 561461 is about 749.3070131795. The cubic root of 561461 is about 82.4973246760.

The spelling of 561461 in words is "five hundred sixty-one thousand, four hundred sixty-one".