126530917 has 2 divisors, whose sum is σ = 126530918. Its totient is φ = 126530916.

The previous prime is 126530893. The next prime is 126530939. The reversal of 126530917 is 719035621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95238081 + 31292836 = 9759^2 + 5594^2 .

It is a cyclic number.

It is not a de Polignac number, because 126530917 - 2¹¹ = 126528869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126530947) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63265458 + 63265459.

It is an arithmetic number, because the mean of its divisors is an integer number (63265459).

Almost surely, 2^126530917 is an apocalyptic number.

It is an amenable number.

126530917 is a deficient number, since it is larger than the sum of its proper divisors (1).

126530917 is an equidigital number, since it uses as much as digits as its factorization.

126530917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 126530917 is about 11248.5962235294. The cubic root of 126530917 is about 502.0329457275.

The spelling of 126530917 in words is "one hundred twenty-six million, five hundred thirty thousand, nine hundred seventeen".