11580161 has 2 divisors, whose sum is σ = 11580162. Its totient is φ = 11580160.

The previous prime is 11580157. The next prime is 11580203. The reversal of 11580161 is 16108511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10042561 + 1537600 = 3169^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 11580161 - 2² = 11580157 is a prime.

It is not a weakly prime, because it can be changed into another prime (11280161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5790080 + 5790081.

It is an arithmetic number, because the mean of its divisors is an integer number (5790081).

Almost surely, 2^11580161 is an apocalyptic number.

It is an amenable number.

11580161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11580161 is an equidigital number, since it uses as much as digits as its factorization.

11580161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 11580161 is about 3402.9635613682. The cubic root of 11580161 is about 226.2411150017.

Adding to 11580161 its reverse (16108511), we get a palindrome (27688672).

The spelling of 11580161 in words is "eleven million, five hundred eighty thousand, one hundred sixty-one".