53121143 has 2 divisors, whose sum is σ = 53121144. Its totient is φ = 53121142.

The previous prime is 53121109. The next prime is 53121161. The reversal of 53121143 is 34112135.

53121143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53121143 - 2¹⁴ = 53104759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53121043) by changing a digit.

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 as a sum of consecutive naturals, namely, 26560571 + 26560572.

It is an arithmetic number, because the mean of its divisors is an integer number (26560572).

Almost surely, 2^53121143 is an apocalyptic number.

53121143 is a deficient number, since it is larger than the sum of its proper divisors (1).

53121143 is an equidigital number, since it uses as much as digits as its factorization.

53121143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 53121143 is about 7288.4252757369. The cubic root of 53121143 is about 375.9145511839.

Adding to 53121143 its reverse (34112135), we get a palindrome (87233278).

The spelling of 53121143 in words is "fifty-three million, one hundred twenty-one thousand, one hundred forty-three".