53317543 has 2 divisors, whose sum is σ = 53317544. Its totient is φ = 53317542.

The previous prime is 53317531. The next prime is 53317571. The reversal of 53317543 is 34571335.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53317543 - 2⁹ = 53317031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53317513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26658771 + 26658772.

It is an arithmetic number, because the mean of its divisors is an integer number (26658772).

Almost surely, 2^53317543 is an apocalyptic number.

53317543 is a deficient number, since it is larger than the sum of its proper divisors (1).

53317543 is an equidigital number, since it uses as much as digits as its factorization.

53317543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 31.

The square root of 53317543 is about 7301.8862631515. The cubic root of 53317543 is about 376.3772597042.

Adding to 53317543 its reverse (34571335), we get a palindrome (87888878).

The spelling of 53317543 in words is "fifty-three million, three hundred seventeen thousand, five hundred forty-three".