126485561 has 2 divisors, whose sum is σ = 126485562. Its totient is φ = 126485560.

The previous prime is 126485543. The next prime is 126485587. The reversal of 126485561 is 165584621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121969936 + 4515625 = 11044^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 126485561 - 2¹⁴ = 126469177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126485521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63242780 + 63242781.

It is an arithmetic number, because the mean of its divisors is an integer number (63242781).

Almost surely, 2^126485561 is an apocalyptic number.

It is an amenable number.

126485561 is a deficient number, since it is larger than the sum of its proper divisors (1).

126485561 is an equidigital number, since it uses as much as digits as its factorization.

126485561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 38.

The square root of 126485561 is about 11246.5799690395. The cubic root of 126485561 is about 501.9729526757.

The spelling of 126485561 in words is "one hundred twenty-six million, four hundred eighty-five thousand, five hundred sixty-one".