135564379 has 2 divisors, whose sum is σ = 135564380. Its totient is φ = 135564378.

The previous prime is 135564367. The next prime is 135564389. The reversal of 135564379 is 973465531.

It is a strong prime.

It is an emirp because it is prime and its reverse (973465531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135564379 - 2⁹ = 135563867 is a prime.

It is not a weakly prime, because it can be changed into another prime (135564349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67782189 + 67782190.

It is an arithmetic number, because the mean of its divisors is an integer number (67782190).

Almost surely, 2^135564379 is an apocalyptic number.

135564379 is a deficient number, since it is larger than the sum of its proper divisors (1).

135564379 is an equidigital number, since it uses as much as digits as its factorization.

135564379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The square root of 135564379 is about 11643.2117132688. The cubic root of 135564379 is about 513.7066601296.

The spelling of 135564379 in words is "one hundred thirty-five million, five hundred sixty-four thousand, three hundred seventy-nine".