11157917 has 2 divisors, whose sum is σ = 11157918. Its totient is φ = 11157916.

The previous prime is 11157889. The next prime is 11157919. The reversal of 11157917 is 71975111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9572836 + 1585081 = 3094^2 + 1259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11157917 is a prime.

It is a super-2 number, since 2×11157917² = 248998223557778, which contains 22 as substring.

Together with 11157919, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₇₃₆₂₅₉ and since 11157917 and 736259 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11157919) 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, 5578958 + 5578959.

It is an arithmetic number, because the mean of its divisors is an integer number (5578959).

Almost surely, 2^11157917 is an apocalyptic number.

It is an amenable number.

11157917 is a deficient number, since it is larger than the sum of its proper divisors (1).

11157917 is an equidigital number, since it uses as much as digits as its factorization.

11157917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2205, while the sum is 32.

The square root of 11157917 is about 3340.3468382789. The cubic root of 11157917 is about 223.4572117873.

The spelling of 11157917 in words is "eleven million, one hundred fifty-seven thousand, nine hundred seventeen".