53320311 has 12 divisors (see below), whose sum is σ = 84020040. Its totient is φ = 32315280.

The previous prime is 53320291. The next prime is 53320331. The reversal of 53320311 is 11302335.

It is an interprime number because it is at equal distance from previous prime (53320291) and next prime (53320331).

It is not a de Polignac number, because 53320311 - 2¹¹ = 53318263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53320331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269196 + ... + 269393.

It is an arithmetic number, because the mean of its divisors is an integer number (7001670).

Almost surely, 2^53320311 is an apocalyptic number.

53320311 is a deficient number, since it is larger than the sum of its proper divisors (30699729).

53320311 is a wasteful number, since it uses less digits than its factorization.

53320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538606 (or 538603 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 53320311 is about 7302.0758007569. The cubic root of 53320311 is about 376.3837728465.

Adding to 53320311 its reverse (11302335), we get a palindrome (64622646).

The spelling of 53320311 in words is "fifty-three million, three hundred twenty thousand, three hundred eleven".