135601073 has 2 divisors, whose sum is σ = 135601074. Its totient is φ = 135601072.

The previous prime is 135601019. The next prime is 135601079. The reversal of 135601073 is 370106531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135094129 + 506944 = 11623^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 135601073 - 2¹⁴ = 135584689 is a prime.

It is not a weakly prime, because it can be changed into another prime (135601079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67800536 + 67800537.

It is an arithmetic number, because the mean of its divisors is an integer number (67800537).

Almost surely, 2^135601073 is an apocalyptic number.

It is an amenable number.

135601073 is a deficient number, since it is larger than the sum of its proper divisors (1).

135601073 is an equidigital number, since it uses as much as digits as its factorization.

135601073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 135601073 is about 11644.7873746153. The cubic root of 135601073 is about 513.7530052729.

The spelling of 135601073 in words is "one hundred thirty-five million, six hundred one thousand, seventy-three".