561000457 has 2 divisors, whose sum is σ = 561000458. Its totient is φ = 561000456.

The previous prime is 561000439. The next prime is 561000467. The reversal of 561000457 is 754000165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404975376 + 156025081 = 20124^2 + 12491^2 .

It is a cyclic number.

It is not a de Polignac number, because 561000457 - 2¹¹ = 560998409 is a prime.

It is not a weakly prime, because it can be changed into another prime (561000467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280500228 + 280500229.

It is an arithmetic number, because the mean of its divisors is an integer number (280500229).

Almost surely, 2^561000457 is an apocalyptic number.

It is an amenable number.

561000457 is a deficient number, since it is larger than the sum of its proper divisors (1).

561000457 is an equidigital number, since it uses as much as digits as its factorization.

561000457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 561000457 is about 23685.4482119296. The cubic root of 561000457 is about 824.7476213632.

The spelling of 561000457 in words is "five hundred sixty-one million, four hundred fifty-seven", and thus it is an aban number.