135144253 has 2 divisors, whose sum is σ = 135144254. Its totient is φ = 135144252.

The previous prime is 135144157. The next prime is 135144257. The reversal of 135144253 is 352441531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88604569 + 46539684 = 9413^2 + 6822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135144253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135144257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67572126 + 67572127.

It is an arithmetic number, because the mean of its divisors is an integer number (67572127).

Almost surely, 2^135144253 is an apocalyptic number.

It is an amenable number.

135144253 is a deficient number, since it is larger than the sum of its proper divisors (1).

135144253 is an equidigital number, since it uses as much as digits as its factorization.

135144253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 135144253 is about 11625.1560419635. The cubic root of 135144253 is about 513.1754368576.

Adding to 135144253 its reverse (352441531), we get a palindrome (487585784).

The spelling of 135144253 in words is "one hundred thirty-five million, one hundred forty-four thousand, two hundred fifty-three".