5123445555 has 24 divisors (see below), whose sum is σ = 8314719696. Its totient is φ = 2693978560.

The previous prime is 5123445541. The next prime is 5123445559. The reversal of 5123445555 is 5555443215.

It is not a de Polignac number, because 5123445555 - 2⁷ = 5123445427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5123445559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41737 + ... + 109493.

It is an arithmetic number, because the mean of its divisors is an integer number (346446654).

Almost surely, 2^5123445555 is an apocalyptic number.

5123445555 is a deficient number, since it is larger than the sum of its proper divisors (3191274141).

5123445555 is an equidigital number, since it uses as much as digits as its factorization.

5123445555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67907 (or 67836 counting only the distinct ones).

The product of its digits is 300000, while the sum is 39.

The square root of 5123445555 is about 71578.2477782182. The cubic root of 5123445555 is about 1723.9342915392.

The spelling of 5123445555 in words is "five billion, one hundred twenty-three million, four hundred forty-five thousand, five hundred fifty-five".