51212823 has 12 divisors (see below), whose sum is σ = 72537960. Its totient is φ = 32132992.

The previous prime is 51212803. The next prime is 51212827. The reversal of 51212823 is 32821215.

51212823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51212823 - 2⁹ = 51212311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51212793 and 51212802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51212827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28668 + ... + 30401.

It is an arithmetic number, because the mean of its divisors is an integer number (6044830).

Almost surely, 2^51212823 is an apocalyptic number.

51212823 is a deficient number, since it is larger than the sum of its proper divisors (21325137).

51212823 is a wasteful number, since it uses less digits than its factorization.

51212823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59106 (or 59089 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 51212823 is about 7156.3135062684. The cubic root of 51212823 is about 371.3581036294.

The spelling of 51212823 in words is "fifty-one million, two hundred twelve thousand, eight hundred twenty-three".