135251513 has 2 divisors, whose sum is σ = 135251514. Its totient is φ = 135251512.

The previous prime is 135251509. The next prime is 135251533. The reversal of 135251513 is 315152531.

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., 131515024 + 3736489 = 11468^2 + 1933^2 .

It is a cyclic number.

It is not a de Polignac number, because 135251513 - 2² = 135251509 is a prime.

It is not a weakly prime, because it can be changed into another prime (135251533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67625756 + 67625757.

It is an arithmetic number, because the mean of its divisors is an integer number (67625757).

Almost surely, 2^135251513 is an apocalyptic number.

It is an amenable number.

135251513 is a deficient number, since it is larger than the sum of its proper divisors (1).

135251513 is an equidigital number, since it uses as much as digits as its factorization.

135251513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 26.

The square root of 135251513 is about 11629.7683983818. The cubic root of 135251513 is about 513.3111650160.

The spelling of 135251513 in words is "one hundred thirty-five million, two hundred fifty-one thousand, five hundred thirteen".