112172891 has 2 divisors, whose sum is σ = 112172892. Its totient is φ = 112172890.

The previous prime is 112172869. The next prime is 112172897. The reversal of 112172891 is 198271211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 112172891 - 2¹⁴ = 112156507 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (112172897) 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, 56086445 + 56086446.

It is an arithmetic number, because the mean of its divisors is an integer number (56086446).

Almost surely, 2^112172891 is an apocalyptic number.

112172891 is a deficient number, since it is larger than the sum of its proper divisors (1).

112172891 is an equidigital number, since it uses as much as digits as its factorization.

112172891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 32.

The square root of 112172891 is about 10591.1704263504. The cubic root of 112172891 is about 482.2763562150.

The spelling of 112172891 in words is "one hundred twelve million, one hundred seventy-two thousand, eight hundred ninety-one".