126163501 has 2 divisors, whose sum is σ = 126163502. Its totient is φ = 126163500.

The previous prime is 126163493. The next prime is 126163547. The reversal of 126163501 is 105361621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119377476 + 6786025 = 10926^2 + 2605^2 .

It is a cyclic number.

It is not a de Polignac number, because 126163501 - 2³ = 126163493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126163571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63081750 + 63081751.

It is an arithmetic number, because the mean of its divisors is an integer number (63081751).

Almost surely, 2^126163501 is an apocalyptic number.

It is an amenable number.

126163501 is a deficient number, since it is larger than the sum of its proper divisors (1).

126163501 is an equidigital number, since it uses as much as digits as its factorization.

126163501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 126163501 is about 11232.2527126129. The cubic root of 126163501 is about 501.5465461248.

The spelling of 126163501 in words is "one hundred twenty-six million, one hundred sixty-three thousand, five hundred one".