11661241 has 2 divisors, whose sum is σ = 11661242. Its totient is φ = 11661240.

The previous prime is 11661229. The next prime is 11661257. The reversal of 11661241 is 14216611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 4016016 = 2765^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 11661241 - 2⁹ = 11660729 is a prime.

It is not a weakly prime, because it can be changed into another prime (11661271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830620 + 5830621.

It is an arithmetic number, because the mean of its divisors is an integer number (5830621).

Almost surely, 2^11661241 is an apocalyptic number.

It is an amenable number.

11661241 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661241 is an equidigital number, since it uses as much as digits as its factorization.

11661241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

The square root of 11661241 is about 3414.8559266827. The cubic root of 11661241 is about 226.7679062841.

Adding to 11661241 its reverse (14216611), we get a palindrome (25877852).

The spelling of 11661241 in words is "eleven million, six hundred sixty-one thousand, two hundred forty-one".