135897227 has 4 divisors (see below), whose sum is σ = 136146216. Its totient is φ = 135648240.

The previous prime is 135897221. The next prime is 135897233. The reversal of 135897227 is 722798531.

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

It is an interprime number because it is at equal distance from previous prime (135897221) and next prime (135897233).

It is a cyclic number.

It is not a de Polignac number, because 135897227 - 2¹⁸ = 135635083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135897221) 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, 123674 + ... + 124767.

It is an arithmetic number, because the mean of its divisors is an integer number (34036554).

Almost surely, 2^135897227 is an apocalyptic number.

135897227 is a deficient number, since it is larger than the sum of its proper divisors (248989).

135897227 is an equidigital number, since it uses as much as digits as its factorization.

135897227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248988.

The product of its digits is 211680, while the sum is 44.

The square root of 135897227 is about 11657.4966009002. The cubic root of 135897227 is about 514.1267470943.

The spelling of 135897227 in words is "one hundred thirty-five million, eight hundred ninety-seven thousand, two hundred twenty-seven".