553807643 has 2 divisors, whose sum is σ = 553807644. Its totient is φ = 553807642.

The previous prime is 553807633. The next prime is 553807651. The reversal of 553807643 is 346708355.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553807643 is a prime.

It is a Chen prime.

It is equal to p_29034878 and since 553807643 and 29034878 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 553807643.

It is not a weakly prime, because it can be changed into another prime (553807633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276903821 + 276903822.

It is an arithmetic number, because the mean of its divisors is an integer number (276903822).

Almost surely, 2^553807643 is an apocalyptic number.

553807643 is a deficient number, since it is larger than the sum of its proper divisors (1).

553807643 is an equidigital number, since it uses as much as digits as its factorization.

553807643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 553807643 is about 23533.1180042085. The cubic root of 553807643 is about 821.2076410778.

The spelling of 553807643 in words is "five hundred fifty-three million, eight hundred seven thousand, six hundred forty-three".