126563117 has 2 divisors, whose sum is σ = 126563118. Its totient is φ = 126563116.

The previous prime is 126563081. The next prime is 126563137. The reversal of 126563117 is 711365621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126472516 + 90601 = 11246^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 126563117 - 2²⁰ = 125514541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126563137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63281558 + 63281559.

It is an arithmetic number, because the mean of its divisors is an integer number (63281559).

Almost surely, 2^126563117 is an apocalyptic number.

It is an amenable number.

126563117 is a deficient number, since it is larger than the sum of its proper divisors (1).

126563117 is an equidigital number, since it uses as much as digits as its factorization.

126563117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 126563117 is about 11250.0274221888. The cubic root of 126563117 is about 502.0755284420.

The spelling of 126563117 in words is "one hundred twenty-six million, five hundred sixty-three thousand, one hundred seventeen".