53545243 has 2 divisors, whose sum is σ = 53545244. Its totient is φ = 53545242.

The previous prime is 53545231. The next prime is 53545279. The reversal of 53545243 is 34254535.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53545243 - 2²⁵ = 19990811 is a prime.

It is not a weakly prime, because it can be changed into another prime (53545343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26772621 + 26772622.

It is an arithmetic number, because the mean of its divisors is an integer number (26772622).

Almost surely, 2^53545243 is an apocalyptic number.

53545243 is a deficient number, since it is larger than the sum of its proper divisors (1).

53545243 is an equidigital number, since it uses as much as digits as its factorization.

53545243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 31.

The square root of 53545243 is about 7317.4615133938. The cubic root of 53545243 is about 376.9122893046.

Adding to 53545243 its reverse (34254535), we get a palindrome (87799778).

The spelling of 53545243 in words is "fifty-three million, five hundred forty-five thousand, two hundred forty-three".