11900261 has 2 divisors, whose sum is σ = 11900262. Its totient is φ = 11900260.

The previous prime is 11900257. The next prime is 11900297. The reversal of 11900261 is 16200911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7924225 + 3976036 = 2815^2 + 1994^2 .

It is an emirp because it is prime and its reverse (16200911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11900261 - 2² = 11900257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11900201) 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, 5950130 + 5950131.

It is an arithmetic number, because the mean of its divisors is an integer number (5950131).

Almost surely, 2^11900261 is an apocalyptic number.

It is an amenable number.

11900261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11900261 is an equidigital number, since it uses as much as digits as its factorization.

11900261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11900261 is about 3449.6754919847. The cubic root of 11900261 is about 228.3067905045.

The spelling of 11900261 in words is "eleven million, nine hundred thousand, two hundred sixty-one".