135053257 has 2 divisors, whose sum is σ = 135053258. Its totient is φ = 135053256.

The previous prime is 135053227. The next prime is 135053297. The reversal of 135053257 is 752350531.

135053257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134931456 + 121801 = 11616^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 135053257 - 2⁷ = 135053129 is a prime.

It is not a weakly prime, because it can be changed into another prime (135053227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67526628 + 67526629.

It is an arithmetic number, because the mean of its divisors is an integer number (67526629).

Almost surely, 2^135053257 is an apocalyptic number.

It is an amenable number.

135053257 is a deficient number, since it is larger than the sum of its proper divisors (1).

135053257 is an equidigital number, since it uses as much as digits as its factorization.

135053257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 135053257 is about 11621.2416290171. The cubic root of 135053257 is about 513.0602330521.

The spelling of 135053257 in words is "one hundred thirty-five million, fifty-three thousand, two hundred fifty-seven".