112172881 has 4 divisors (see below), whose sum is σ = 113202100. Its totient is φ = 111143664.

The previous prime is 112172869. The next prime is 112172891. The reversal of 112172881 is 188271211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77598481 + 34574400 = 8809^2 + 5880^2 .

It is a cyclic number.

It is not a de Polignac number, because 112172881 - 2¹¹ = 112170833 is a prime.

It is a super-2 number, since 2×112172881² = 25165510463680322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112172821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514446 + ... + 514663.

It is an arithmetic number, because the mean of its divisors is an integer number (28300525).

Almost surely, 2^112172881 is an apocalyptic number.

It is an amenable number.

112172881 is a deficient number, since it is larger than the sum of its proper divisors (1029219).

112172881 is a wasteful number, since it uses less digits than its factorization.

112172881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029218.

The product of its digits is 1792, while the sum is 31.

The square root of 112172881 is about 10591.1699542591. The cubic root of 112172881 is about 482.2763418837.

The spelling of 112172881 in words is "one hundred twelve million, one hundred seventy-two thousand, eight hundred eighty-one".