53321311 has 4 divisors (see below), whose sum is σ = 53356824. Its totient is φ = 53285800.

The previous prime is 53321297. The next prime is 53321341. The reversal of 53321311 is 11312335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11312335 = 5 ⋅2262467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53321311 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 (53321341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15400 + ... + 18541.

It is an arithmetic number, because the mean of its divisors is an integer number (13339206).

Almost surely, 2^53321311 is an apocalyptic number.

53321311 is a deficient number, since it is larger than the sum of its proper divisors (35513).

53321311 is a wasteful number, since it uses less digits than its factorization.

53321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35512.

The product of its digits is 270, while the sum is 19.

The square root of 53321311 is about 7302.1442741157. The cubic root of 53321311 is about 376.3861258049.

Adding to 53321311 its reverse (11312335), we get a palindrome (64633646).

The spelling of 53321311 in words is "fifty-three million, three hundred twenty-one thousand, three hundred eleven".