5123305511 has 4 divisors (see below), whose sum is σ = 5248264224. Its totient is φ = 4998346800.

The previous prime is 5123305501. The next prime is 5123305513. The reversal of 5123305511 is 1155033215.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5123305511 is a prime.

It is a super-2 number, since 2×5123305511² = 52496518718085942242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123305513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62479295 + ... + 62479376.

It is an arithmetic number, because the mean of its divisors is an integer number (1312066056).

Almost surely, 2^5123305511 is an apocalyptic number.

5123305511 is a deficient number, since it is larger than the sum of its proper divisors (124958713).

5123305511 is a wasteful number, since it uses less digits than its factorization.

5123305511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124958712.

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

The square root of 5123305511 is about 71577.2695134426. The cubic root of 5123305511 is about 1723.9185840854.

Adding to 5123305511 its reverse (1155033215), we get a palindrome (6278338726).

The spelling of 5123305511 in words is "five billion, one hundred twenty-three million, three hundred five thousand, five hundred eleven".