51122312 has 32 divisors (see below), whose sum is σ = 102060000. Its totient is φ = 23937408.

The previous prime is 51122311. The next prime is 51122321. The reversal of 51122312 is 21322115.

It is a happy number.

It is a super-2 number, since 2×51122312² = 5226981568450688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51122311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11639 + ... + 15417.

It is an arithmetic number, because the mean of its divisors is an integer number (3189375).

Almost surely, 2^51122312 is an apocalyptic number.

It is an amenable number.

51122312 is a deficient number, since it is larger than the sum of its proper divisors (50937688).

51122312 is a wasteful number, since it uses less digits than its factorization.

51122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893 (or 3889 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 51122312 is about 7149.9868531348. The cubic root of 51122312 is about 371.1392013298.

Adding to 51122312 its reverse (21322115), we get a palindrome (72444427).

The spelling of 51122312 in words is "fifty-one million, one hundred twenty-two thousand, three hundred twelve".