135443617 has 2 divisors, whose sum is σ = 135443618. Its totient is φ = 135443616.

The previous prime is 135443597. The next prime is 135443663. The reversal of 135443617 is 716344531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115004176 + 20439441 = 10724^2 + 4521^2 .

It is a cyclic number.

It is not a de Polignac number, because 135443617 - 2¹¹ = 135441569 is a prime.

It is not a weakly prime, because it can be changed into another prime (135443117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67721808 + 67721809.

It is an arithmetic number, because the mean of its divisors is an integer number (67721809).

Almost surely, 2^135443617 is an apocalyptic number.

It is an amenable number.

135443617 is a deficient number, since it is larger than the sum of its proper divisors (1).

135443617 is an equidigital number, since it uses as much as digits as its factorization.

135443617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 135443617 is about 11638.0246176059. The cubic root of 135443617 is about 513.5540766017.

It can be divided in two parts, 13544 and 3617, that added together give a square (17161 = 131²).

The spelling of 135443617 in words is "one hundred thirty-five million, four hundred forty-three thousand, six hundred seventeen".