135260291 has 2 divisors, whose sum is σ = 135260292. Its totient is φ = 135260290.

The previous prime is 135260287. The next prime is 135260317. The reversal of 135260291 is 192062531.

It is a weak prime.

It is an emirp because it is prime and its reverse (192062531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135260291 - 2² = 135260287 is a prime.

It is not a weakly prime, because it can be changed into another prime (135260231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67630145 + 67630146.

It is an arithmetic number, because the mean of its divisors is an integer number (67630146).

Almost surely, 2^135260291 is an apocalyptic number.

135260291 is a deficient number, since it is larger than the sum of its proper divisors (1).

135260291 is an equidigital number, since it uses as much as digits as its factorization.

135260291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 135260291 is about 11630.1457858446. The cubic root of 135260291 is about 513.3222696309.

The spelling of 135260291 in words is "one hundred thirty-five million, two hundred sixty thousand, two hundred ninety-one".