263228543 has 2 divisors, whose sum is σ = 263228544. Its totient is φ = 263228542.

The previous prime is 263228521. The next prime is 263228557. The reversal of 263228543 is 345822362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263228543 - 2¹⁶ = 263163007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263228503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131614271 + 131614272.

It is an arithmetic number, because the mean of its divisors is an integer number (131614272).

Almost surely, 2^263228543 is an apocalyptic number.

263228543 is a deficient number, since it is larger than the sum of its proper divisors (1).

263228543 is an equidigital number, since it uses as much as digits as its factorization.

263228543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 35.

The square root of 263228543 is about 16224.3194926629. The cubic root of 263228543 is about 640.8813889730.

The spelling of 263228543 in words is "two hundred sixty-three million, two hundred twenty-eight thousand, five hundred forty-three".