126808501 has 2 divisors, whose sum is σ = 126808502. Its totient is φ = 126808500.

The previous prime is 126808477. The next prime is 126808511. The reversal of 126808501 is 105808621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123099025 + 3709476 = 11095^2 + 1926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126808501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126808511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63404250 + 63404251.

It is an arithmetic number, because the mean of its divisors is an integer number (63404251).

Almost surely, 2^126808501 is an apocalyptic number.

It is an amenable number.

126808501 is a deficient number, since it is larger than the sum of its proper divisors (1).

126808501 is an equidigital number, since it uses as much as digits as its factorization.

126808501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 126808501 is about 11260.9280701015. The cubic root of 126808501 is about 502.3997981767.

The spelling of 126808501 in words is "one hundred twenty-six million, eight hundred eight thousand, five hundred one".