51126220 has 24 divisors (see below), whose sum is σ = 107536464. Its totient is φ = 20417856.

The previous prime is 51126209. The next prime is 51126233. The reversal of 51126220 is 2262115.

51126220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51126220² = 5227780742976800, which contains 22 as substring.

It is a zygodrome in base 2.

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 7 ways as a sum of consecutive naturals, for example, 13807 + ... + 17113.

It is an arithmetic number, because the mean of its divisors is an integer number (4480686).

Almost surely, 2^51126220 is an apocalyptic number.

It is an amenable number.

51126220 is an abundant number, since it is smaller than the sum of its proper divisors (56410244).

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

51126220 is a wasteful number, since it uses less digits than its factorization.

51126220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 51126220 is about 7150.2601351280. The cubic root of 51126220 is about 371.1486582250.

Adding to 51126220 its reverse (2262115), we get a palindrome (53388335).

The spelling of 51126220 in words is "fifty-one million, one hundred twenty-six thousand, two hundred twenty".