53205143 has 2 divisors, whose sum is σ = 53205144. Its totient is φ = 53205142.

The previous prime is 53205137. The next prime is 53205161. The reversal of 53205143 is 34150235.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53205143 - 2⁸ = 53204887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53205193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26602571 + 26602572.

It is an arithmetic number, because the mean of its divisors is an integer number (26602572).

Almost surely, 2^53205143 is an apocalyptic number.

53205143 is a deficient number, since it is larger than the sum of its proper divisors (1).

53205143 is an equidigital number, since it uses as much as digits as its factorization.

53205143 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 53205143 is about 7294.1855611165. The cubic root of 53205143 is about 376.1125903015.

Adding to 53205143 its reverse (34150235), we get a palindrome (87355378).

The spelling of 53205143 in words is "fifty-three million, two hundred five thousand, one hundred forty-three".