11810261 has 2 divisors, whose sum is σ = 11810262. Its totient is φ = 11810260.

The previous prime is 11810243. The next prime is 11810269. The reversal of 11810261 is 16201811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7187761 + 4622500 = 2681^2 + 2150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11810261 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 (11810269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5905130 + 5905131.

It is an arithmetic number, because the mean of its divisors is an integer number (5905131).

Almost surely, 2^11810261 is an apocalyptic number.

It is an amenable number.

11810261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11810261 is an equidigital number, since it uses as much as digits as its factorization.

11810261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 11810261 is about 3436.6060292096. The cubic root of 11810261 is about 227.7297827270.

The spelling of 11810261 in words is "eleven million, eight hundred ten thousand, two hundred sixty-one".