53305311 has 4 divisors (see below), whose sum is σ = 71073752. Its totient is φ = 35536872.

The previous prime is 53305253. The next prime is 53305313. The reversal of 53305311 is 11350335.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53305311 - 2⁶ = 53305247 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 (53305313) 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, 8884216 + ... + 8884221.

It is an arithmetic number, because the mean of its divisors is an integer number (17768438).

Almost surely, 2^53305311 is an apocalyptic number.

53305311 is a deficient number, since it is larger than the sum of its proper divisors (17768441).

53305311 is a wasteful number, since it uses less digits than its factorization.

53305311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17768440.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 53305311 is about 7301.0486233143. The cubic root of 53305311 is about 376.3484749398.

Adding to 53305311 its reverse (11350335), we get a palindrome (64655646).

The spelling of 53305311 in words is "fifty-three million, three hundred five thousand, three hundred eleven".