5239578812 has 24 divisors (see below), whose sum is σ = 9894040800. Its totient is φ = 2413503936.

The previous prime is 5239578811. The next prime is 5239578893. The reversal of 5239578812 is 2188759325.

It is a happy number.

It is a super-2 number, since 2×5239578812² = 54906372254318662688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5239578811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72512 + ... + 125447.

It is an arithmetic number, because the mean of its divisors is an integer number (412251700).

Almost surely, 2^5239578812 is an apocalyptic number.

5239578812 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

5239578812 is a deficient number, since it is larger than the sum of its proper divisors (4654461988).

5239578812 is a wasteful number, since it uses less digits than its factorization.

5239578812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198485 (or 198483 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The square root of 5239578812 is about 72384.9349795936. The cubic root of 5239578812 is about 1736.8625820650.

The spelling of 5239578812 in words is "five billion, two hundred thirty-nine million, five hundred seventy-eight thousand, eight hundred twelve".