135501523 has 2 divisors, whose sum is σ = 135501524. Its totient is φ = 135501522.

The previous prime is 135501503. The next prime is 135501539. The reversal of 135501523 is 325105531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135501523 - 2⁵ = 135501491 is a prime.

It is not a weakly prime, because it can be changed into another prime (135501503) 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, 67750761 + 67750762.

It is an arithmetic number, because the mean of its divisors is an integer number (67750762).

Almost surely, 2^135501523 is an apocalyptic number.

135501523 is a deficient number, since it is larger than the sum of its proper divisors (1).

135501523 is an equidigital number, since it uses as much as digits as its factorization.

135501523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 135501523 is about 11640.5121450905. The cubic root of 135501523 is about 513.6272525010.

The spelling of 135501523 in words is "one hundred thirty-five million, five hundred one thousand, five hundred twenty-three".