11175881 has 2 divisors, whose sum is σ = 11175882. Its totient is φ = 11175880.

The previous prime is 11175869. The next prime is 11175889. The reversal of 11175881 is 18857111.

11175881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9985600 + 1190281 = 3160^2 + 1091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11175881 is a prime.

It is a super-2 number, since 2×11175881² = 249800632252322, which contains 22 as substring.

It is a Chen prime.

It is equal to p₇₃₇₃₈₄ and since 11175881 and 737384 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11175889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5587940 + 5587941.

It is an arithmetic number, because the mean of its divisors is an integer number (5587941).

Almost surely, 2^11175881 is an apocalyptic number.

It is an amenable number.

11175881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11175881 is an equidigital number, since it uses as much as digits as its factorization.

11175881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 32.

The square root of 11175881 is about 3343.0346991917. The cubic root of 11175881 is about 223.5770678807.

The spelling of 11175881 in words is "eleven million, one hundred seventy-five thousand, eight hundred eighty-one".