111598871 has 2 divisors, whose sum is σ = 111598872. Its totient is φ = 111598870.

The previous prime is 111598859. The next prime is 111598933. The reversal of 111598871 is 178895111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111598871 - 2⁶ = 111598807 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 (111598801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55799435 + 55799436.

It is an arithmetic number, because the mean of its divisors is an integer number (55799436).

Almost surely, 2^111598871 is an apocalyptic number.

111598871 is a deficient number, since it is larger than the sum of its proper divisors (1).

111598871 is an equidigital number, since it uses as much as digits as its factorization.

111598871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 41.

The square root of 111598871 is about 10564.0366811177. The cubic root of 111598871 is about 481.4523013869.

The spelling of 111598871 in words is "one hundred eleven million, five hundred ninety-eight thousand, eight hundred seventy-one".