53143243 has 2 divisors, whose sum is σ = 53143244. Its totient is φ = 53143242.

The previous prime is 53143219. The next prime is 53143249. The reversal of 53143243 is 34234135.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53143243 is a prime.

It is not a weakly prime, because it can be changed into another prime (53143249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26571621 + 26571622.

It is an arithmetic number, because the mean of its divisors is an integer number (26571622).

Almost surely, 2^53143243 is an apocalyptic number.

53143243 is a deficient number, since it is larger than the sum of its proper divisors (1).

53143243 is an equidigital number, since it uses as much as digits as its factorization.

53143243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 53143243 is about 7289.9412206135. The cubic root of 53143243 is about 375.9666745589.

Adding to 53143243 its reverse (34234135), we get a palindrome (87377378).

The spelling of 53143243 in words is "fifty-three million, one hundred forty-three thousand, two hundred forty-three".