135507529 has 2 divisors, whose sum is σ = 135507530. Its totient is φ = 135507528.

The previous prime is 135507523. The next prime is 135507553. The reversal of 135507529 is 925705531.

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., 96569929 + 38937600 = 9827^2 + 6240^2 .

It is a cyclic number.

It is not a de Polignac number, because 135507529 - 2⁵ = 135507497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135507523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67753764 + 67753765.

It is an arithmetic number, because the mean of its divisors is an integer number (67753765).

Almost surely, 2^135507529 is an apocalyptic number.

It is an amenable number.

135507529 is a deficient number, since it is larger than the sum of its proper divisors (1).

135507529 is an equidigital number, since it uses as much as digits as its factorization.

135507529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 135507529 is about 11640.7701205719. The cubic root of 135507529 is about 513.6348410988.

The spelling of 135507529 in words is "one hundred thirty-five million, five hundred seven thousand, five hundred twenty-nine".