51343812 has 72 divisors (see below), whose sum is σ = 144318720. Its totient is φ = 15284160.

The previous prime is 51343793. The next prime is 51343829. The reversal of 51343812 is 21834315.

It is a happy number.

51343812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12739 + ... + 16277.

Almost surely, 2^51343812 is an apocalyptic number.

51343812 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51343812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72159360).

51343812 is an abundant number, since it is smaller than the sum of its proper divisors (92974908).

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

51343812 is a wasteful number, since it uses less digits than its factorization.

51343812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593 (or 3588 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 51343812 is about 7165.4596502946. The cubic root of 51343812 is about 371.6744463595.

The spelling of 51343812 in words is "fifty-one million, three hundred forty-three thousand, eight hundred twelve".