135622187 has 4 divisors (see below), whose sum is σ = 135646896. Its totient is φ = 135597480.

The previous prime is 135622181. The next prime is 135622189. The reversal of 135622187 is 781226531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781226531 = 331 ⋅2360201.

It is a cyclic number.

It is not a de Polignac number, because 135622187 - 2¹⁴ = 135605803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135622181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 16469.

It is an arithmetic number, because the mean of its divisors is an integer number (33911724).

Almost surely, 2^135622187 is an apocalyptic number.

135622187 is a deficient number, since it is larger than the sum of its proper divisors (24709).

135622187 is an equidigital number, since it uses as much as digits as its factorization.

135622187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24708.

The product of its digits is 20160, while the sum is 35.

The square root of 135622187 is about 11645.6939252240. The cubic root of 135622187 is about 513.7796688229.

The spelling of 135622187 in words is "one hundred thirty-five million, six hundred twenty-two thousand, one hundred eighty-seven".