135601579 has 2 divisors, whose sum is σ = 135601580. Its totient is φ = 135601578.

The previous prime is 135601561. The next prime is 135601591. The reversal of 135601579 is 975106531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135601579 - 2⁷ = 135601451 is a prime.

It is not a weakly prime, because it can be changed into another prime (135601519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67800789 + 67800790.

It is an arithmetic number, because the mean of its divisors is an integer number (67800790).

Almost surely, 2^135601579 is an apocalyptic number.

135601579 is a deficient number, since it is larger than the sum of its proper divisors (1).

135601579 is an equidigital number, since it uses as much as digits as its factorization.

135601579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 135601579 is about 11644.8091010544. The cubic root of 135601579 is about 513.7536443010.

The spelling of 135601579 in words is "one hundred thirty-five million, six hundred one thousand, five hundred seventy-nine".