555000005243 has 2 divisors, whose sum is σ = 555000005244. Its totient is φ = 555000005242.

The previous prime is 555000005239. The next prime is 555000005249. The reversal of 555000005243 is 342500000555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555000005243 - 2² = 555000005239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (555000005249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277500002621 + 277500002622.

It is an arithmetic number, because the mean of its divisors is an integer number (277500002622).

Almost surely, 2^555000005243 is an apocalyptic number.

555000005243 is a deficient number, since it is larger than the sum of its proper divisors (1).

555000005243 is an equidigital number, since it uses as much as digits as its factorization.

555000005243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 29.

Adding to 555000005243 its reverse (342500000555), we get a palindrome (897500005798).

The spelling of 555000005243 in words is "five hundred fifty-five billion, five thousand, two hundred forty-three".