135047897 has 2 divisors, whose sum is σ = 135047898. Its totient is φ = 135047896.

The previous prime is 135047879. The next prime is 135047903. The reversal of 135047897 is 798740531.

Together with previous prime (135047879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135047641 + 256 = 11621^2 + 16^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135047897 is a prime.

It is not a weakly prime, because it can be changed into another prime (135047827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67523948 + 67523949.

It is an arithmetic number, because the mean of its divisors is an integer number (67523949).

Almost surely, 2^135047897 is an apocalyptic number.

It is an amenable number.

135047897 is a deficient number, since it is larger than the sum of its proper divisors (1).

135047897 is an equidigital number, since it uses as much as digits as its factorization.

135047897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 135047897 is about 11621.0110145374. The cubic root of 135047897 is about 513.0534455094.

The spelling of 135047897 in words is "one hundred thirty-five million, forty-seven thousand, eight hundred ninety-seven".