11491061 has 2 divisors, whose sum is σ = 11491062. Its totient is φ = 11491060.

The previous prime is 11491043. The next prime is 11491069. The reversal of 11491061 is 16019411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9572836 + 1918225 = 3094^2 + 1385^2 .

It is an emirp because it is prime and its reverse (16019411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11491061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11491069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5745530 + 5745531.

It is an arithmetic number, because the mean of its divisors is an integer number (5745531).

Almost surely, 2^11491061 is an apocalyptic number.

It is an amenable number.

11491061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11491061 is an equidigital number, since it uses as much as digits as its factorization.

11491061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 11491061 is about 3389.8467516984. The cubic root of 11491061 is about 225.6593727862.

The spelling of 11491061 in words is "eleven million, four hundred ninety-one thousand, sixty-one".