135258361 has 4 divisors (see below), whose sum is σ = 154580992. Its totient is φ = 115935732.

The previous prime is 135258353. The next prime is 135258371. The reversal of 135258361 is 163852531.

135258361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163852531 = 2203 ⋅74377.

It is a cyclic number.

It is not a de Polignac number, because 135258361 - 2³ = 135258353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135258371) 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, 9661305 + ... + 9661318.

It is an arithmetic number, because the mean of its divisors is an integer number (38645248).

Almost surely, 2^135258361 is an apocalyptic number.

It is an amenable number.

135258361 is a deficient number, since it is larger than the sum of its proper divisors (19322631).

135258361 is an equidigital number, since it uses as much as digits as its factorization.

135258361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19322630.

The product of its digits is 21600, while the sum is 34.

The square root of 135258361 is about 11630.0628115243. The cubic root of 135258361 is about 513.3198281243.

The spelling of 135258361 in words is "one hundred thirty-five million, two hundred fifty-eight thousand, three hundred sixty-one".