113244521 has 4 divisors (see below), whose sum is σ = 121955652. Its totient is φ = 104533392.

The previous prime is 113244511. The next prime is 113244553. The reversal of 113244521 is 125442311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125442311 = 197 ⋅636763.

It can be written as a sum of positive squares in 2 ways, for example, as 57592921 + 55651600 = 7589^2 + 7460^2 .

It is a cyclic number.

It is not a de Polignac number, because 113244521 - 2¹⁸ = 112982377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113244511) 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 in 3 ways as a sum of consecutive naturals, for example, 4355546 + ... + 4355571.

It is an arithmetic number, because the mean of its divisors is an integer number (30488913).

Almost surely, 2^113244521 is an apocalyptic number.

It is an amenable number.

113244521 is a deficient number, since it is larger than the sum of its proper divisors (8711131).

113244521 is an equidigital number, since it uses as much as digits as its factorization.

113244521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711130.

The product of its digits is 960, while the sum is 23.

The square root of 113244521 is about 10641.6408979067. The cubic root of 113244521 is about 483.8072807510.

Adding to 113244521 its reverse (125442311), we get a palindrome (238686832).

The spelling of 113244521 in words is "one hundred thirteen million, two hundred forty-four thousand, five hundred twenty-one".