11851157 has 2 divisors, whose sum is σ = 11851158. Its totient is φ = 11851156.

The previous prime is 11851139. The next prime is 11851181. The reversal of 11851157 is 75115811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11015761 + 835396 = 3319^2 + 914^2 .

It is an emirp because it is prime and its reverse (75115811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11851157 - 2⁶ = 11851093 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 (11851127) 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, 5925578 + 5925579.

It is an arithmetic number, because the mean of its divisors is an integer number (5925579).

Almost surely, 2^11851157 is an apocalyptic number.

It is an amenable number.

11851157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11851157 is an equidigital number, since it uses as much as digits as its factorization.

11851157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 29.

The square root of 11851157 is about 3442.5509437044. The cubic root of 11851157 is about 227.9923371283.

Adding to 11851157 its reverse (75115811), we get a palindrome (86966968).

The spelling of 11851157 in words is "eleven million, eight hundred fifty-one thousand, one hundred fifty-seven".