126563441 has 2 divisors, whose sum is σ = 126563442. Its totient is φ = 126563440.

The previous prime is 126563407. The next prime is 126563443. The reversal of 126563441 is 144365621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118701025 + 7862416 = 10895^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 126563441 - 2¹⁸ = 126301297 is a prime.

It is a Sophie Germain prime.

Together with 126563443, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 126563398 and 126563407.

It is not a weakly prime, because it can be changed into another prime (126563443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63281720 + 63281721.

It is an arithmetic number, because the mean of its divisors is an integer number (63281721).

Almost surely, 2^126563441 is an apocalyptic number.

It is an amenable number.

126563441 is a deficient number, since it is larger than the sum of its proper divisors (1).

126563441 is an equidigital number, since it uses as much as digits as its factorization.

126563441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 126563441 is about 11250.0418221445. The cubic root of 126563441 is about 502.0759568774.

The spelling of 126563441 in words is "one hundred twenty-six million, five hundred sixty-three thousand, four hundred forty-one".