555731240243 has 2 divisors, whose sum is σ = 555731240244. Its totient is φ = 555731240242.

The previous prime is 555731240221. The next prime is 555731240299. The reversal of 555731240243 is 342042137555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555731240243 is a prime.

It is a super-2 number, since 2×555731240243² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 555731240243.

It is not a weakly prime, because it can be changed into another prime (555731240203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277865620121 + 277865620122.

It is an arithmetic number, because the mean of its divisors is an integer number (277865620122).

Almost surely, 2^555731240243 is an apocalyptic number.

555731240243 is a deficient number, since it is larger than the sum of its proper divisors (1).

555731240243 is an equidigital number, since it uses as much as digits as its factorization.

555731240243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 41.

Adding to 555731240243 its reverse (342042137555), we get a palindrome (897773377798).

The spelling of 555731240243 in words is "five hundred fifty-five billion, seven hundred thirty-one million, two hundred forty thousand, two hundred forty-three".