555115123 has 2 divisors, whose sum is σ = 555115124. Its totient is φ = 555115122.

The previous prime is 555115111. The next prime is 555115151. The reversal of 555115123 is 321511555.

It is an a-pointer prime, because the next prime (555115151) can be obtained adding 555115123 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555115123 - 2¹³ = 555106931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 555115091 and 555115100.

It is not a weakly prime, because it can be changed into another prime (555115103) 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, 277557561 + 277557562.

It is an arithmetic number, because the mean of its divisors is an integer number (277557562).

Almost surely, 2^555115123 is an apocalyptic number.

555115123 is a deficient number, since it is larger than the sum of its proper divisors (1).

555115123 is an equidigital number, since it uses as much as digits as its factorization.

555115123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3750, while the sum is 28.

The square root of 555115123 is about 23560.8812016868. The cubic root of 555115123 is about 821.8533939932.

Adding to 555115123 its reverse (321511555), we get a palindrome (876626678).

The spelling of 555115123 in words is "five hundred fifty-five million, one hundred fifteen thousand, one hundred twenty-three".