111650857 has 2 divisors, whose sum is σ = 111650858. Its totient is φ = 111650856.

The previous prime is 111650839. The next prime is 111650863. The reversal of 111650857 is 758056111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96510976 + 15139881 = 9824^2 + 3891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111650857 is a prime.

It is not a weakly prime, because it can be changed into another prime (111650057) 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, 55825428 + 55825429.

It is an arithmetic number, because the mean of its divisors is an integer number (55825429).

Almost surely, 2^111650857 is an apocalyptic number.

It is an amenable number.

111650857 is a deficient number, since it is larger than the sum of its proper divisors (1).

111650857 is an equidigital number, since it uses as much as digits as its factorization.

111650857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 34.

The square root of 111650857 is about 10566.4969124114. The cubic root of 111650857 is about 481.5270479434.

The spelling of 111650857 in words is "one hundred eleven million, six hundred fifty thousand, eight hundred fifty-seven".