53827909 has 4 divisors (see below), whose sum is σ = 54011916. Its totient is φ = 53643904.

The previous prime is 53827901. The next prime is 53827927. The reversal of 53827909 is 90972835.

It is a happy number.

53827909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52272900 + 1555009 = 7230^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 53827909 - 2³ = 53827901 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 (53827901) 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, 91564 + ... + 92149.

It is an arithmetic number, because the mean of its divisors is an integer number (13502979).

Almost surely, 2^53827909 is an apocalyptic number.

It is an amenable number.

53827909 is a deficient number, since it is larger than the sum of its proper divisors (184007).

53827909 is a wasteful number, since it uses less digits than its factorization.

53827909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184006.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 53827909 is about 7336.7505750162. The cubic root of 53827909 is about 377.5743671741.

The spelling of 53827909 in words is "fifty-three million, eight hundred twenty-seven thousand, nine hundred nine".