112591261 has 4 divisors (see below), whose sum is σ = 112621500. Its totient is φ = 112561024.

The previous prime is 112591249. The next prime is 112591291. The reversal of 112591261 is 162195211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162195211 = 53 ⋅3060287.

It can be written as a sum of positive squares in 2 ways, for example, as 52838361 + 59752900 = 7269^2 + 7730^2 .

It is a cyclic number.

It is not a de Polignac number, because 112591261 - 2¹⁵ = 112558493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112591211) 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 in 3 ways as a sum of consecutive naturals, for example, 8596 + ... + 17293.

It is an arithmetic number, because the mean of its divisors is an integer number (28155375).

Almost surely, 2^112591261 is an apocalyptic number.

It is an amenable number.

112591261 is a deficient number, since it is larger than the sum of its proper divisors (30239).

112591261 is an equidigital number, since it uses as much as digits as its factorization.

112591261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30238.

The product of its digits is 1080, while the sum is 28.

The square root of 112591261 is about 10610.9029304767. The cubic root of 112591261 is about 482.8751926167.

The spelling of 112591261 in words is "one hundred twelve million, five hundred ninety-one thousand, two hundred sixty-one".