135258605 has 4 divisors (see below), whose sum is σ = 162310332. Its totient is φ = 108206880.

The previous prime is 135258601. The next prime is 135258619. The reversal of 135258605 is 506852531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46936201 + 88322404 = 6851^2 + 9398^2 .

It is not a de Polignac number, because 135258605 - 2² = 135258601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135258601) 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, 13525856 + ... + 13525865.

It is an arithmetic number, because the mean of its divisors is an integer number (40577583).

Almost surely, 2^135258605 is an apocalyptic number.

It is an amenable number.

135258605 is a deficient number, since it is larger than the sum of its proper divisors (27051727).

135258605 is an equidigital number, since it uses as much as digits as its factorization.

135258605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27051726.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 135258605 is about 11630.0733015747. The cubic root of 135258605 is about 513.3201367927.

The spelling of 135258605 in words is "one hundred thirty-five million, two hundred fifty-eight thousand, six hundred five".