112643155 has 4 divisors (see below), whose sum is σ = 135171792. Its totient is φ = 90114520.

The previous prime is 112643137. The next prime is 112643171. The reversal of 112643155 is 551346211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551346211 = 13 ⋅42411247.

It is not a de Polignac number, because 112643155 - 2⁵ = 112643123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11264311 + ... + 11264320.

It is an arithmetic number, because the mean of its divisors is an integer number (33792948).

Almost surely, 2^112643155 is an apocalyptic number.

112643155 is a deficient number, since it is larger than the sum of its proper divisors (22528637).

112643155 is an equidigital number, since it uses as much as digits as its factorization.

112643155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22528636.

The product of its digits is 3600, while the sum is 28.

The square root of 112643155 is about 10613.3479637671. The cubic root of 112643155 is about 482.9493679306.

Adding to 112643155 its reverse (551346211), we get a palindrome (663989366).

The spelling of 112643155 in words is "one hundred twelve million, six hundred forty-three thousand, one hundred fifty-five".