135500857 has 4 divisors (see below), whose sum is σ = 135562896. Its totient is φ = 135438820.

The previous prime is 135500851. The next prime is 135500881. The reversal of 135500857 is 758005531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758005531 = 103 ⋅7359277.

It is a cyclic number.

It is not a de Polignac number, because 135500857 - 2²⁷ = 1283129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135500851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27619 + ... + 32152.

It is an arithmetic number, because the mean of its divisors is an integer number (33890724).

Almost surely, 2^135500857 is an apocalyptic number.

It is an amenable number.

135500857 is a deficient number, since it is larger than the sum of its proper divisors (62039).

135500857 is an equidigital number, since it uses as much as digits as its factorization.

135500857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62038.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 135500857 is about 11640.4835380666. The cubic root of 135500857 is about 513.6264109943.

The spelling of 135500857 in words is "one hundred thirty-five million, five hundred thousand, eight hundred fifty-seven".