51122272 has 24 divisors (see below), whose sum is σ = 102069072. Its totient is φ = 25200000.

The previous prime is 51122237. The next prime is 51122311. The reversal of 51122272 is 27222115.

It is a super-2 number, since 2×51122272² = 5226973388883968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8979 + ... + 13522.

It is an arithmetic number, because the mean of its divisors is an integer number (4252878).

Almost surely, 2^51122272 is an apocalyptic number.

It is an amenable number.

51122272 is a deficient number, since it is larger than the sum of its proper divisors (50946800).

51122272 is a wasteful number, since it uses less digits than its factorization.

51122272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22582 (or 22574 counting only the distinct ones).

The product of its digits is 560, while the sum is 22.

The square root of 51122272 is about 7149.9840559263. The cubic root of 51122272 is about 371.1391045320.

Adding to 51122272 its reverse (27222115), we get a palindrome (78344387).

It can be divided in two parts, 5112 and 2272, that multiplied together give a square (11614464 = 3408²).

The spelling of 51122272 in words is "fifty-one million, one hundred twenty-two thousand, two hundred seventy-two".