159135565 has 4 divisors (see below), whose sum is σ = 190962684. Its totient is φ = 127308448.

The previous prime is 159135563. The next prime is 159135569. The reversal of 159135565 is 565531951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81378441 + 77757124 = 9021^2 + 8818^2 .

It is a cyclic number.

It is not a de Polignac number, because 159135565 - 2¹ = 159135563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159135563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15913552 + ... + 15913561.

It is an arithmetic number, because the mean of its divisors is an integer number (47740671).

Almost surely, 2^159135565 is an apocalyptic number.

It is an amenable number.

159135565 is a deficient number, since it is larger than the sum of its proper divisors (31827119).

159135565 is an equidigital number, since it uses as much as digits as its factorization.

159135565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31827118.

The product of its digits is 101250, while the sum is 40.

The square root of 159135565 is about 12614.8945695158. The cubic root of 159135565 is about 541.9040749707.

The spelling of 159135565 in words is "one hundred fifty-nine million, one hundred thirty-five thousand, five hundred sixty-five".