53021543 has 2 divisors, whose sum is σ = 53021544. Its totient is φ = 53021542.

The previous prime is 53021513. The next prime is 53021587. The reversal of 53021543 is 34512035.

53021543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53021543 - 2²⁰ = 51972967 is a prime.

It is a super-2 number, since 2×53021543² = 5622568044201698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53021503) 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, 26510771 + 26510772.

It is an arithmetic number, because the mean of its divisors is an integer number (26510772).

Almost surely, 2^53021543 is an apocalyptic number.

53021543 is a deficient number, since it is larger than the sum of its proper divisors (1).

53021543 is an equidigital number, since it uses as much as digits as its factorization.

53021543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53021543 is about 7281.5893182739. The cubic root of 53021543 is about 375.6794626563.

Adding to 53021543 its reverse (34512035), we get a palindrome (87533578).

The spelling of 53021543 in words is "fifty-three million, twenty-one thousand, five hundred forty-three".