11757121 has 2 divisors, whose sum is σ = 11757122. Its totient is φ = 11757120.

The previous prime is 11757101. The next prime is 11757139. The reversal of 11757121 is 12175711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 5198400 = 2561^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11757121 - 2⁹ = 11756609 is a prime.

It is not a weakly prime, because it can be changed into another prime (11757101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5878560 + 5878561.

It is an arithmetic number, because the mean of its divisors is an integer number (5878561).

Almost surely, 2^11757121 is an apocalyptic number.

It is an amenable number.

11757121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11757121 is an equidigital number, since it uses as much as digits as its factorization.

11757121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 490, while the sum is 25.

The square root of 11757121 is about 3428.8658474779. The cubic root of 11757121 is about 227.3877141819.

The spelling of 11757121 in words is "eleven million, seven hundred fifty-seven thousand, one hundred twenty-one".