51322812 has 24 divisors (see below), whose sum is σ = 119965776. Its totient is φ = 17077248.

The previous prime is 51322807. The next prime is 51322823. The reversal of 51322812 is 21822315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3868 + ... + 10844.

It is an arithmetic number, because the mean of its divisors is an integer number (4998574).

Almost surely, 2^51322812 is an apocalyptic number.

It is an amenable number.

51322812 is an abundant number, since it is smaller than the sum of its proper divisors (68642964).

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

51322812 is a wasteful number, since it uses less digits than its factorization.

51322812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597 (or 7595 counting only the distinct ones).

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

The square root of 51322812 is about 7163.9941373510. The cubic root of 51322812 is about 371.6237669142.

The spelling of 51322812 in words is "fifty-one million, three hundred twenty-two thousand, eight hundred twelve".