135975137 has 4 divisors (see below), whose sum is σ = 136300080. Its totient is φ = 135650196.

The previous prime is 135975127. The next prime is 135975139. The reversal of 135975137 is 731579531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731579531 = 379 ⋅1930289.

It is a cyclic number.

It is not a de Polignac number, because 135975137 - 2⁴ = 135975121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135975094 and 135975103.

It is not an unprimeable number, because it can be changed into a prime (135975139) 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 in 3 ways as a sum of consecutive naturals, for example, 161843 + ... + 162680.

It is an arithmetic number, because the mean of its divisors is an integer number (34075020).

Almost surely, 2^135975137 is an apocalyptic number.

It is an amenable number.

135975137 is a deficient number, since it is larger than the sum of its proper divisors (324943).

135975137 is an equidigital number, since it uses as much as digits as its factorization.

135975137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324942.

The product of its digits is 99225, while the sum is 41.

The square root of 135975137 is about 11660.8377486354. The cubic root of 135975137 is about 514.2249780971.

The spelling of 135975137 in words is "one hundred thirty-five million, nine hundred seventy-five thousand, one hundred thirty-seven".