135775657 has 2 divisors, whose sum is σ = 135775658. Its totient is φ = 135775656.

The previous prime is 135775649. The next prime is 135775699. The reversal of 135775657 is 756577531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 8785296 = 11269^2 + 2964^2 .

It is a cyclic number.

It is not a de Polignac number, because 135775657 - 2³ = 135775649 is a prime.

It is not a weakly prime, because it can be changed into another prime (135775637) 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, 67887828 + 67887829.

It is an arithmetic number, because the mean of its divisors is an integer number (67887829).

Almost surely, 2^135775657 is an apocalyptic number.

It is an amenable number.

135775657 is a deficient number, since it is larger than the sum of its proper divisors (1).

135775657 is an equidigital number, since it uses as much as digits as its factorization.

135775657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 771750, while the sum is 46.

The square root of 135775657 is about 11652.2811929682. The cubic root of 135775657 is about 513.9733933751.

The spelling of 135775657 in words is "one hundred thirty-five million, seven hundred seventy-five thousand, six hundred fifty-seven".