1170056161 has 16 divisors (see below), whose sum is σ = 1294337664. Its totient is φ = 1052054784.

The previous prime is 1170056149. The next prime is 1170056221. The reversal of 1170056161 is 1616500711.

It is a cyclic number.

It is not a de Polignac number, because 1170056161 - 2¹¹ = 1170054113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1170056141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473050 + ... + 475516.

It is an arithmetic number, because the mean of its divisors is an integer number (80896104).

Almost surely, 2^1170056161 is an apocalyptic number.

It is an amenable number.

1170056161 is a deficient number, since it is larger than the sum of its proper divisors (124281503).

1170056161 is a wasteful number, since it uses less digits than its factorization.

1170056161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1170056161 is about 34206.0836840466. The cubic root of 1170056161 is about 1053.7451027120.

Adding to 1170056161 its reverse (1616500711), we get a palindrome (2786556872).

The spelling of 1170056161 in words is "one billion, one hundred seventy million, fifty-six thousand, one hundred sixty-one".