135815357 has 2 divisors, whose sum is σ = 135815358. Its totient is φ = 135815356.

The previous prime is 135815333. The next prime is 135815387. The reversal of 135815357 is 753518531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116402521 + 19412836 = 10789^2 + 4406^2 .

It is an emirp because it is prime and its reverse (753518531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135815357 - 2¹² = 135811261 is a prime.

It is a super-2 number, since 2×135815357² = 36891622394074898, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135815357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135815387) 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 as a sum of consecutive naturals, namely, 67907678 + 67907679.

It is an arithmetic number, because the mean of its divisors is an integer number (67907679).

Almost surely, 2^135815357 is an apocalyptic number.

It is an amenable number.

135815357 is a deficient number, since it is larger than the sum of its proper divisors (1).

135815357 is an equidigital number, since it uses as much as digits as its factorization.

135815357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 38.

The square root of 135815357 is about 11653.9845975529. The cubic root of 135815357 is about 514.0234827548.

The spelling of 135815357 in words is "one hundred thirty-five million, eight hundred fifteen thousand, three hundred fifty-seven".