553220243 has 2 divisors, whose sum is σ = 553220244. Its totient is φ = 553220242.

The previous prime is 553220183. The next prime is 553220251. The reversal of 553220243 is 342022355.

553220243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 553220243 - 2⁸ = 553219987 is a prime.

It is not a weakly prime, because it can be changed into another prime (553220543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276610121 + 276610122.

It is an arithmetic number, because the mean of its divisors is an integer number (276610122).

Almost surely, 2^553220243 is an apocalyptic number.

553220243 is a deficient number, since it is larger than the sum of its proper divisors (1).

553220243 is an equidigital number, since it uses as much as digits as its factorization.

553220243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 553220243 is about 23520.6344089610. The cubic root of 553220243 is about 820.9171984662.

Adding to 553220243 its reverse (342022355), we get a palindrome (895242598).

The spelling of 553220243 in words is "five hundred fifty-three million, two hundred twenty thousand, two hundred forty-three".