135528799 has 4 divisors (see below), whose sum is σ = 154890064. Its totient is φ = 116167536.

The previous prime is 135528797. The next prime is 135528851. The reversal of 135528799 is 997825531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997825531 = 2251 ⋅443281.

It is a cyclic number.

It is not a de Polignac number, because 135528799 - 2¹ = 135528797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135528793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9680622 + ... + 9680635.

It is an arithmetic number, because the mean of its divisors is an integer number (38722516).

Almost surely, 2^135528799 is an apocalyptic number.

135528799 is a deficient number, since it is larger than the sum of its proper divisors (19361265).

135528799 is an equidigital number, since it uses as much as digits as its factorization.

135528799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19361264.

The product of its digits is 680400, while the sum is 49.

The square root of 135528799 is about 11641.6836840725. The cubic root of 135528799 is about 513.6617140005.

The spelling of 135528799 in words is "one hundred thirty-five million, five hundred twenty-eight thousand, seven hundred ninety-nine".