113521549 has 4 divisors (see below), whose sum is σ = 115382620. Its totient is φ = 111660480.

The previous prime is 113521489. The next prime is 113521607. The reversal of 113521549 is 945125311.

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 48024900 + 65496649 = 6930^2 + 8093^2 .

It is a cyclic number.

It is not a de Polignac number, because 113521549 - 2¹¹ = 113519501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113521549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113521949) 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, 930444 + ... + 930565.

It is an arithmetic number, because the mean of its divisors is an integer number (28845655).

Almost surely, 2^113521549 is an apocalyptic number.

It is an amenable number.

113521549 is a deficient number, since it is larger than the sum of its proper divisors (1861071).

113521549 is an equidigital number, since it uses as much as digits as its factorization.

113521549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861070.

The product of its digits is 5400, while the sum is 31.

The square root of 113521549 is about 10654.6491730136. The cubic root of 113521549 is about 484.2014691270.

The spelling of 113521549 in words is "one hundred thirteen million, five hundred twenty-one thousand, five hundred forty-nine".