1111157 has 2 divisors, whose sum is σ = 1111158. Its totient is φ = 1111156.

The previous prime is 1111151. The next prime is 1111169. The reversal of 1111157 is 7511111.

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., 749956 + 361201 = 866^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111157 - 2¹⁰ = 1110133 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111151) 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, 555578 + 555579.

It is an arithmetic number, because the mean of its divisors is an integer number (555579).

2^1111157 is an apocalyptic number.

It is an amenable number.

1111157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111157 is an equidigital number, since it uses as much as digits as its factorization.

1111157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35, while the sum is 17.

The square root of 1111157 is about 1054.1143201759. The cubic root of 1111157 is about 103.5758427200.

Adding to 1111157 its reverse (7511111), we get a palindrome (8622268).

The spelling of 1111157 in words is "one million, one hundred eleven thousand, one hundred fifty-seven".