135528593 has 2 divisors, whose sum is σ = 135528594. Its totient is φ = 135528592.

The previous prime is 135528541. The next prime is 135528619. The reversal of 135528593 is 395825531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124724224 + 10804369 = 11168^2 + 3287^2 .

It is an emirp because it is prime and its reverse (395825531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135528593 - 2¹² = 135524497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135528593.

It is not a weakly prime, because it can be changed into another prime (135528793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67764296 + 67764297.

It is an arithmetic number, because the mean of its divisors is an integer number (67764297).

Almost surely, 2^135528593 is an apocalyptic number.

It is an amenable number.

135528593 is a deficient number, since it is larger than the sum of its proper divisors (1).

135528593 is an equidigital number, since it uses as much as digits as its factorization.

135528593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 41.

The square root of 135528593 is about 11641.6748365517. The cubic root of 135528593 is about 513.6614537499.

The spelling of 135528593 in words is "one hundred thirty-five million, five hundred twenty-eight thousand, five hundred ninety-three".