135091441 has 2 divisors, whose sum is σ = 135091442. Its totient is φ = 135091440.

The previous prime is 135091399. The next prime is 135091447. The reversal of 135091441 is 144190531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 531441 = 11600^2 + 729^2 .

It is an emirp because it is prime and its reverse (144190531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135091441 - 2¹¹ = 135089393 is a prime.

It is not a weakly prime, because it can be changed into another prime (135091447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67545720 + 67545721.

It is an arithmetic number, because the mean of its divisors is an integer number (67545721).

Almost surely, 2^135091441 is an apocalyptic number.

It is an amenable number.

135091441 is a deficient number, since it is larger than the sum of its proper divisors (1).

135091441 is an equidigital number, since it uses as much as digits as its factorization.

135091441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 135091441 is about 11622.8843666278. The cubic root of 135091441 is about 513.1085814996.

The spelling of 135091441 in words is "one hundred thirty-five million, ninety-one thousand, four hundred forty-one".