135500657 has 2 divisors, whose sum is σ = 135500658. Its totient is φ = 135500656.

The previous prime is 135500653. The next prime is 135500663. The reversal of 135500657 is 756005531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105863521 + 29637136 = 10289^2 + 5444^2 .

It is a cyclic number.

It is not a de Polignac number, because 135500657 - 2² = 135500653 is a prime.

It is not a weakly prime, because it can be changed into another prime (135500653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67750328 + 67750329.

It is an arithmetic number, because the mean of its divisors is an integer number (67750329).

Almost surely, 2^135500657 is an apocalyptic number.

It is an amenable number.

135500657 is a deficient number, since it is larger than the sum of its proper divisors (1).

135500657 is an equidigital number, since it uses as much as digits as its factorization.

135500657 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 32.

The square root of 135500657 is about 11640.4749473550. The cubic root of 135500657 is about 513.6261582890.

The spelling of 135500657 in words is "one hundred thirty-five million, five hundred thousand, six hundred fifty-seven".