5211112172 has 36 divisors (see below), whose sum is σ = 10736180280. Its totient is φ = 2206419264.

The previous prime is 5211112147. The next prime is 5211112189. The reversal of 5211112172 is 2712111125.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 143897 + ... + 176432.

It is an arithmetic number, because the mean of its divisors is an integer number (298227230).

Almost surely, 2^5211112172 is an apocalyptic number.

It is an amenable number.

5211112172 is an abundant number, since it is smaller than the sum of its proper divisors (5525068108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5211112172 is a wasteful number, since it uses less digits than its factorization.

5211112172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320430 (or 320421 counting only the distinct ones).

The product of its digits is 280, while the sum is 23.

The square root of 5211112172 is about 72188.0334404533. The cubic root of 5211112172 is about 1733.7114093259.

Adding to 5211112172 its reverse (2712111125), we get a palindrome (7923223297).

The spelling of 5211112172 in words is "five billion, two hundred eleven million, one hundred twelve thousand, one hundred seventy-two".