111540157 has 2 divisors, whose sum is σ = 111540158. Its totient is φ = 111540156.

The previous prime is 111540113. The next prime is 111540167. The reversal of 111540157 is 751045111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84437721 + 27102436 = 9189^2 + 5206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111540157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111540167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55770078 + 55770079.

It is an arithmetic number, because the mean of its divisors is an integer number (55770079).

Almost surely, 2^111540157 is an apocalyptic number.

It is an amenable number.

111540157 is a deficient number, since it is larger than the sum of its proper divisors (1).

111540157 is an equidigital number, since it uses as much as digits as its factorization.

111540157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 111540157 is about 10561.2573588565. The cubic root of 111540157 is about 481.3678532527.

Adding to 111540157 its reverse (751045111), we get a palindrome (862585268).

The spelling of 111540157 in words is "one hundred eleven million, five hundred forty thousand, one hundred fifty-seven".