11557129 has 2 divisors, whose sum is σ = 11557130. Its totient is φ = 11557128.

The previous prime is 11557099. The next prime is 11557151. The reversal of 11557129 is 92175511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6943225 + 4613904 = 2635^2 + 2148^2 .

It is a cyclic number.

It is not a de Polignac number, because 11557129 - 2¹³ = 11548937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11557129.

It is not a weakly prime, because it can be changed into another prime (11557829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778564 + 5778565.

It is an arithmetic number, because the mean of its divisors is an integer number (5778565).

Almost surely, 2^11557129 is an apocalyptic number.

It is an amenable number.

11557129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557129 is an equidigital number, since it uses as much as digits as its factorization.

11557129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 31.

The square root of 11557129 is about 3399.5777679000. The cubic root of 11557129 is about 226.0910237150.

It can be divided in two parts, 115571 and 29, that added together give a square (115600 = 340²).

The spelling of 11557129 in words is "eleven million, five hundred fifty-seven thousand, one hundred twenty-nine".