9557532161 has 4 divisors (see below), whose sum is σ = 9557730132. Its totient is φ = 9557334192.

The previous prime is 9557532143. The next prime is 9557532167. The reversal of 9557532161 is 1612357559.

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 5326810225 + 4230721936 = 72985^2 + 65044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9557532161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9557532167) 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, 26231 + ... + 140723.

It is an arithmetic number, because the mean of its divisors is an integer number (2389432533).

Almost surely, 2^9557532161 is an apocalyptic number.

It is an amenable number.

9557532161 is a deficient number, since it is larger than the sum of its proper divisors (197971).

9557532161 is a wasteful number, since it uses less digits than its factorization.

9557532161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197970.

The product of its digits is 283500, while the sum is 44.

The square root of 9557532161 is about 97762.6317209188. The cubic root of 9557532161 is about 2122.1785603791.

The spelling of 9557532161 in words is "nine billion, five hundred fifty-seven million, five hundred thirty-two thousand, one hundred sixty-one".