126551539 has 2 divisors, whose sum is σ = 126551540. Its totient is φ = 126551538.

The previous prime is 126551531. The next prime is 126551567. The reversal of 126551539 is 935155621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126551539 - 2³ = 126551531 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 126551498 and 126551507.

It is not a weakly prime, because it can be changed into another prime (126551531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63275769 + 63275770.

It is an arithmetic number, because the mean of its divisors is an integer number (63275770).

Almost surely, 2^126551539 is an apocalyptic number.

126551539 is a deficient number, since it is larger than the sum of its proper divisors (1).

126551539 is an equidigital number, since it uses as much as digits as its factorization.

126551539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 37.

The square root of 126551539 is about 11249.5128338964. The cubic root of 126551539 is about 502.0602180107.

The spelling of 126551539 in words is "one hundred twenty-six million, five hundred fifty-one thousand, five hundred thirty-nine".