53318641 has 4 divisors (see below), whose sum is σ = 53589492. Its totient is φ = 53047792.

The previous prime is 53318621. The next prime is 53318651. The reversal of 53318641 is 14681335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14681335 = 5 ⋅2936267.

It can be written as a sum of positive squares in 2 ways, for example, as 51552400 + 1766241 = 7180^2 + 1329^2 .

It is a cyclic number.

It is not a de Polignac number, because 53318641 - 2⁵ = 53318609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53318621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135130 + ... + 135523.

It is an arithmetic number, because the mean of its divisors is an integer number (13397373).

Almost surely, 2^53318641 is an apocalyptic number.

It is an amenable number.

53318641 is a deficient number, since it is larger than the sum of its proper divisors (270851).

53318641 is a wasteful number, since it uses less digits than its factorization.

53318641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270850.

The product of its digits is 8640, while the sum is 31.

The square root of 53318641 is about 7301.9614488163. The cubic root of 53318641 is about 376.3798433404.

Adding to 53318641 its reverse (14681335), we get a palindrome (67999976).

The spelling of 53318641 in words is "fifty-three million, three hundred eighteen thousand, six hundred forty-one".