53840305 has 8 divisors (see below), whose sum is σ = 64704744. Its totient is φ = 43008000.

The previous prime is 53840287. The next prime is 53840321. The reversal of 53840305 is 50304835.

53840305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20466576 + 33373729 = 4524^2 + 5777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53840305 - 2¹³ = 53832113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4176 + ... + 11185.

It is an arithmetic number, because the mean of its divisors is an integer number (8088093).

Almost surely, 2^53840305 is an apocalyptic number.

It is an amenable number.

53840305 is a deficient number, since it is larger than the sum of its proper divisors (10864439).

53840305 is a wasteful number, since it uses less digits than its factorization.

53840305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16067.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 53840305 is about 7337.5953145428. The cubic root of 53840305 is about 377.6033487483.

It can be divided in two parts, 53840 and 305, that added together give a palindrome (54145).

The spelling of 53840305 in words is "fifty-three million, eight hundred forty thousand, three hundred five".