51125212 has 6 divisors (see below), whose sum is σ = 89469128. Its totient is φ = 25562604.

The previous prime is 51125201. The next prime is 51125279. The reversal of 51125212 is 21252115.

51125212 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 2×51125212² = 5227574604089888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51125212.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 6390648 + ... + 6390655.

Almost surely, 2^51125212 is an apocalyptic number.

It is an amenable number.

51125212 is a deficient number, since it is larger than the sum of its proper divisors (38343916).

51125212 is a wasteful number, since it uses less digits than its factorization.

51125212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12781307 (or 12781305 counting only the distinct ones).

The product of its digits is 200, while the sum is 19.

The square root of 51125212 is about 7150.1896478345. The cubic root of 51125212 is about 371.1462190310.

Adding to 51125212 its reverse (21252115), we get a palindrome (72377327).

The spelling of 51125212 in words is "fifty-one million, one hundred twenty-five thousand, two hundred twelve".