135255361 has 4 divisors (see below), whose sum is σ = 137472724. Its totient is φ = 133038000.

The previous prime is 135255271. The next prime is 135255371. The reversal of 135255361 is 163552531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163552531 = 457 ⋅357883.

It can be written as a sum of positive squares in 2 ways, for example, as 34152336 + 101103025 = 5844^2 + 10055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135255361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135255371) 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, 1108590 + ... + 1108711.

It is an arithmetic number, because the mean of its divisors is an integer number (34368181).

Almost surely, 2^135255361 is an apocalyptic number.

It is an amenable number.

135255361 is a deficient number, since it is larger than the sum of its proper divisors (2217363).

135255361 is an equidigital number, since it uses as much as digits as its factorization.

135255361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217362.

The product of its digits is 13500, while the sum is 31.

The square root of 135255361 is about 11629.9338347215. The cubic root of 135255361 is about 513.3160329902.

The spelling of 135255361 in words is "one hundred thirty-five million, two hundred fifty-five thousand, three hundred sixty-one".