11791261 has 2 divisors, whose sum is σ = 11791262. Its totient is φ = 11791260.

The previous prime is 11791243. The next prime is 11791277. The reversal of 11791261 is 16219711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9803161 + 1988100 = 3131^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 11791261 - 2¹¹ = 11789213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11791201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5895630 + 5895631.

It is an arithmetic number, because the mean of its divisors is an integer number (5895631).

Almost surely, 2^11791261 is an apocalyptic number.

It is an amenable number.

11791261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11791261 is an equidigital number, since it uses as much as digits as its factorization.

11791261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 28.

The square root of 11791261 is about 3433.8405612375. The cubic root of 11791261 is about 227.6075955245.

It can be divided in two parts, 117 and 91261, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 11791261 in words is "eleven million, seven hundred ninety-one thousand, two hundred sixty-one".