135172229 has 2 divisors, whose sum is σ = 135172230. Its totient is φ = 135172228.

The previous prime is 135172217. The next prime is 135172241. The reversal of 135172229 is 922271531.

It is a balanced prime because it is at equal distance from previous prime (135172217) and next prime (135172241).

It can be written as a sum of positive squares in only one way, i.e., 82319329 + 52852900 = 9073^2 + 7270^2 .

It is an emirp because it is prime and its reverse (922271531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135172229 - 2¹² = 135168133 is a prime.

It is a Chen prime.

It is equal to p_7654703 and since 135172229 and 7654703 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 135172195 and 135172204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135172529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67586114 + 67586115.

It is an arithmetic number, because the mean of its divisors is an integer number (67586115).

Almost surely, 2^135172229 is an apocalyptic number.

It is an amenable number.

135172229 is a deficient number, since it is larger than the sum of its proper divisors (1).

135172229 is an equidigital number, since it uses as much as digits as its factorization.

135172229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 135172229 is about 11626.3592323650. The cubic root of 135172229 is about 513.2108449621.

The spelling of 135172229 in words is "one hundred thirty-five million, one hundred seventy-two thousand, two hundred twenty-nine".