555123113 has 4 divisors (see below), whose sum is σ = 565597188. Its totient is φ = 544649040.

The previous prime is 555123097. The next prime is 555123131. The reversal of 555123113 is 311321555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386201104 + 168922009 = 19652^2 + 12997^2 .

It is a cyclic number.

It is not a de Polignac number, because 555123113 - 2⁴ = 555123097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555123013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5236958 + ... + 5237063.

It is an arithmetic number, because the mean of its divisors is an integer number (141399297).

Almost surely, 2^555123113 is an apocalyptic number.

555123113 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

555123113 is a deficient number, since it is larger than the sum of its proper divisors (10474075).

555123113 is a wasteful number, since it uses less digits than its factorization.

555123113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474074.

The product of its digits is 2250, while the sum is 26.

The square root of 555123113 is about 23561.0507617975. The cubic root of 555123113 is about 821.8573370654.

Adding to 555123113 its reverse (311321555), we get a palindrome (866444668).

The spelling of 555123113 in words is "five hundred fifty-five million, one hundred twenty-three thousand, one hundred thirteen".