51426212 has 6 divisors (see below), whose sum is σ = 89995878. Its totient is φ = 25713104.

The previous prime is 51426211. The next prime is 51426239. The reversal of 51426212 is 21262415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 817216 = 7114^2 + 904^2 .

It is not an unprimeable number, because it can be changed into a prime (51426211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428273 + ... + 6428280.

It is an arithmetic number, because the mean of its divisors is an integer number (14999313).

Almost surely, 2^51426212 is an apocalyptic number.

It is an amenable number.

51426212 is a deficient number, since it is larger than the sum of its proper divisors (38569666).

51426212 is a wasteful number, since it uses less digits than its factorization.

51426212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856557 (or 12856555 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 51426212 is about 7171.2071508220. The cubic root of 51426212 is about 371.8731694658.

Adding to 51426212 its reverse (21262415), we get a palindrome (72688627).

The spelling of 51426212 in words is "fifty-one million, four hundred twenty-six thousand, two hundred twelve".