112543521 has 16 divisors (see below), whose sum is σ = 153633024. Its totient is φ = 73249664.

The previous prime is 112543499. The next prime is 112543523. The reversal of 112543521 is 125345211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 112543521 - 2⁵ = 112543489 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112543491 and 112543500.

It is not an unprimeable number, because it can be changed into a prime (112543523) 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 15 ways as a sum of consecutive naturals, for example, 77821 + ... + 79253.

It is an arithmetic number, because the mean of its divisors is an integer number (9602064).

Almost surely, 2^112543521 is an apocalyptic number.

It is an amenable number.

112543521 is a deficient number, since it is larger than the sum of its proper divisors (41089503).

112543521 is a wasteful number, since it uses less digits than its factorization.

112543521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its digits is 1200, while the sum is 24.

The square root of 112543521 is about 10608.6531190345. The cubic root of 112543521 is about 482.8069347417.

Adding to 112543521 its reverse (125345211), we get a palindrome (237888732).

The spelling of 112543521 in words is "one hundred twelve million, five hundred forty-three thousand, five hundred twenty-one".