53185543 has 2 divisors, whose sum is σ = 53185544. Its totient is φ = 53185542.

The previous prime is 53185513. The next prime is 53185619. The reversal of 53185543 is 34558135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53185543 - 2⁵ = 53185511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53185499 and 53185508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53185513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26592771 + 26592772.

It is an arithmetic number, because the mean of its divisors is an integer number (26592772).

Almost surely, 2^53185543 is an apocalyptic number.

53185543 is a deficient number, since it is larger than the sum of its proper divisors (1).

53185543 is an equidigital number, since it uses as much as digits as its factorization.

53185543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 34.

The square root of 53185543 is about 7292.8419014812. The cubic root of 53185543 is about 376.0663998284.

The spelling of 53185543 in words is "fifty-three million, one hundred eighty-five thousand, five hundred forty-three".